Crash when using sway and headless output

[fredericve]

I'm using regolith 3.0 with sway and have configured a headless output for screen sharing. When I open regolith control center and switch to the displays tab it crashes:

Jan 08 13:05:32 ciri regolith-wayland.desktop[6157]: **
Jan 08 13:05:32 ciri regolith-wayland.desktop[6157]: display-cc-panel:ERROR:../panels/display/cc-display-settings.c:278:cc_display_settings_rebuild_ui: assertion failed: (modes)
Jan 08 13:05:32 ciri regolith-wayland.desktop[6157]: Bail out! display-cc-panel:ERROR:../panels/display/cc-display-settings.c:278:cc_display_settings_rebuild_ui: assertion failed: (modes)
Jan 08 13:05:32 ciri regolith-wayland.desktop[6156]: Aborted

I'm adding a headless output with swaymsg create_output.

Relatedly, since sway 1.8 there exists a command swaymsg output <output-name> unplug to remove a headless output, but the regolith sway version was forked from 1.7 so does not have that feature. Would it be trivial to resync that?