Add 7 new difftests and push constants support #627

Job	Run time
Android (ubuntu-24.04, aarch64-linux-android)	8m 8s
Test (macOS-latest)	6m 5s
Lint	6m 42s
Difftest (macOS-latest)	9m 55s
Difftest (ubuntu-24.04)	12m 47s
Compiletest (macOS-latest)	7m 26s
cargo-deny	53s
Test (ubuntu-24.04)	6m 5s
Difftest (windows-2022)	16m 34s
Compiletest (ubuntu-24.04)	8m 2s
Compiletest (windows-2022)	7m 53s
Test (windows-2022)	5m 48s
test_success	4s
	1h 36m 22s

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