Add 7 new difftests and push constants support #606

Job	Run time
Android (ubuntu-24.04, aarch64-linux-android)	7m 57s
Test (ubuntu-24.04)	8m 18s
Test (windows-2022)	14m 7s
Test (macOS-latest)	11m 6s
Compiletest (windows-2022)	14m 6s
Compiletest (ubuntu-24.04)	8m 4s
Compiletest (macOS-latest)	10m 34s
Difftest (ubuntu-24.04)	11m 59s
Difftest (windows-2022)	14m 6s
Lint	6m 22s
Difftest (macOS-latest)	13m 24s
cargo-deny	1m 19s
test_success	3s
	2h 1m 25s

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