Add 7 new difftests and push constants support #645

Job	Run time
Android (ubuntu-24.04, aarch64-linux-android)	8m 22s
Difftest (ubuntu-24.04)	13m 3s
Difftest (windows-2022)	25m 40s
Compiletest (windows-2022)	16m 7s
Test (windows-2022)	15m 44s
Compiletest (ubuntu-24.04)	8m 9s
Difftest (macOS-latest)	24m 1s
cargo-deny	1m 5s
Test (ubuntu-24.04)	8m 24s
Test (macOS-latest)	12m 0s
Compiletest (macOS-latest)	7m 28s
Lint	6m 15s
test_success	3s
	2h 26m 21s

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