Fix Hyprland IPC thread sanitizer warning, other IPC & general fixes

[zjeffer]

• Fixes hyprland/windowcount creating a separate IPC instance, instead of accessing the singleton.
• Add a tsan.supp file that can be used to suppress tsan issues when debugging with thread sanitizer enabled. GDK/GLib has tons of issues with data races, which aren't relevant when fixing bugs with Waybar itself.
• Also add an asan.supp file for address sanitizer
• Fix false positive warning getting thrown when swap-icon-label is not set in the config.

==================
WARNING: ThreadSanitizer: data race (pid=1189116)
  Write of size 1 at 0x55e211e06968 by main thread:
    #0 waybar::modules::hyprland::Workspaces::Workspaces(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, waybar::Bar const&, Json::Value const&) ../src/modules/hyprland/workspaces.cpp:21 (waybar+0x2598bc) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #1 waybar::Factory::makeModule(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const ../src/factory.cpp:211 (waybar+0x3ae07) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #2 waybar::Bar::getModules(waybar::Factory const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, waybar::Group*) ../src/bar.cpp:503 (waybar+0x103a19) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #3 waybar::Bar::setupWidgets() ../src/bar.cpp:560 (waybar+0x104275) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #4 waybar::Bar::Bar(waybar::waybar_output*, Json::Value const&) ../src/bar.cpp:280 (waybar+0x101358) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #5 std::__detail::_MakeUniq<waybar::Bar>::__single_object std::make_unique<waybar::Bar, waybar::waybar_output*, Json::Value const&>(waybar::waybar_output*&&, Json::Value const&) <null> (waybar+0x126e97) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #6 waybar::Client::handleOutputDone(void*, zxdg_output_v1*) ../src/client.cpp:84 (waybar+0x116421) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #7 <null> <null> (libffi.so.8+0x7ac5) (BuildId: 02fec367864097384b082accc299b6e74c83454b)
    #8 main ../src/main.cpp:107 (waybar+0xfb9c2) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)

  Previous read of size 1 at 0x55e211e06968 by thread T7:
    #0 waybar::modules::hyprland::IPC::socketListener() ../src/modules/hyprland/backend.cpp:81 (waybar+0x241b26) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #1 operator() ../src/modules/hyprland/backend.cpp:48 (waybar+0x24175f) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #2 __invoke_impl<void, waybar::modules::hyprland::IPC::IPC()::<lambda()> > /usr/include/c++/15.1.1/bits/invoke.h:63 (waybar+0x24321d) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #3 __invoke<waybar::modules::hyprland::IPC::IPC()::<lambda()> > /usr/include/c++/15.1.1/bits/invoke.h:98 (waybar+0x243198) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #4 _M_invoke<0> /usr/include/c++/15.1.1/bits/std_thread.h:303 (waybar+0x24310e) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #5 operator() /usr/include/c++/15.1.1/bits/std_thread.h:310 (waybar+0x2430b8) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #6 _M_run /usr/include/c++/15.1.1/bits/std_thread.h:255 (waybar+0x243072) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #7 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:104 (libstdc++.so.6+0xe55a3) (BuildId: b7f565a7c08824e8865f66d42992e5dc01059f01)

  Location is global 'waybar::modules::hyprland::modulesReady' of size 1 at 0x55e211e06968 (waybar+0x53f968)

  Thread T7 (tid=1189208, running) created by main thread at:
    #0 pthread_create /usr/src/debug/gcc/gcc/libsanitizer/tsan/tsan_interceptors_posix.cpp:1041 (libtsan.so.2+0x5fb47) (BuildId: c904c43459cc4e1fee6965f1448d8b3c05385b21)
    #1 __gthread_create(unsigned long*, void* (*)(void*), void*) /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:709 (libstdc++.so.6+0xe56a1) (BuildId: b7f565a7c08824e8865f66d42992e5dc01059f01)
    #2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:172 (libstdc++.so.6+0xe56a1)
    #3 waybar::modules::hyprland::IPC::IPC() ../src/modules/hyprland/backend.cpp:48 (waybar+0x241822) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #4 waybar::modules::hyprland::IPC::inst() ../src/modules/hyprland/backend.cpp:68 (waybar+0x241a48) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #5 waybar::modules::hyprland::Workspaces::Workspaces(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, waybar::Bar const&, Json::Value const&) ../src/modules/hyprland/workspaces.cpp:20 (waybar+0x259887) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #6 waybar::Factory::makeModule(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const ../src/factory.cpp:211 (waybar+0x3ae07) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #7 waybar::Bar::getModules(waybar::Factory const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, waybar::Group*) ../src/bar.cpp:503 (waybar+0x103a19) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #8 waybar::Bar::setupWidgets() ../src/bar.cpp:560 (waybar+0x104275) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #9 waybar::Bar::Bar(waybar::waybar_output*, Json::Value const&) ../src/bar.cpp:280 (waybar+0x101358) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #10 std::__detail::_MakeUniq<waybar::Bar>::__single_object std::make_unique<waybar::Bar, waybar::waybar_output*, Json::Value const&>(waybar::waybar_output*&&, Json::Value const&) <null> (waybar+0x126e97) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #11 waybar::Client::handleOutputDone(void*, zxdg_output_v1*) ../src/client.cpp:84 (waybar+0x116421) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)
    #12 <null> <null> (libffi.so.8+0x7ac5) (BuildId: 02fec367864097384b082accc299b6e74c83454b)
    #13 main ../src/main.cpp:107 (waybar+0xfb9c2) (BuildId: d5dde6d1937144c65f22efb47a25f4b5d959ba57)

SUMMARY: ThreadSanitizer: data race ../src/modules/hyprland/workspaces.cpp:21 in waybar::modules::hyprland::Workspaces::Workspaces(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, waybar::Bar const&, Json::Value const&)
==================

Potential fix for #3975 This won't fix #3975 (#4408 will), but should be merged regardless.