Test

Disable MIR optimizations in tests #7374

Job	Run time
clippy-check	3m 40s
fmt-check	21s
check-deps	10m 33s
quick-tests	6m 28s
smir-check	3s
purification-tests	26m 34s
release-build (ubuntu-latest)	7m 39s
test-crates (0)	1h 0m 22s
release-build (windows-latest)	12m 47s
test-crates (1)	32m 38s
all-tests (ubuntu-latest)	25m 41s
release-build (macos-latest)	13m 41s
test-on-prusti	0s
test-crates (2)	43m 15s
all-tests (windows-latest)	31m 58s
test-crates (3)	43m 18s
all-tests (macos-latest)	35m 34s
can-merge	2s
	5h 54m 34s

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