Add 7 new difftests and push constants support #613

Job	Run time
Android (ubuntu-24.04, aarch64-linux-android)	8m 7s
Test (macOS-latest)	5m 39s
Difftest (windows-2022)	28m 29s
cargo-deny	56s
Difftest (ubuntu-24.04)	15m 1s
Test (windows-2022)	15m 45s
Difftest (macOS-latest)	15m 51s
Lint	6m 38s
Compiletest (macOS-latest)	7m 12s
Compiletest (windows-2022)	15m 9s
Compiletest (ubuntu-24.04)	8m 10s
Test (ubuntu-24.04)	8m 8s
test_success	4s
	2h 15m 9s

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