Make `prettier` a Rust test #4524

Job	Run time
lint	59m 24s
coverage	0s
test (ubuntu-latest, cargo-dylint)	52m 12s
test (ubuntu-latest, examples)	24m 23s
test (ubuntu-latest, other)	22m 0s
test (macos-latest, cargo-dylint)	49m 49s
test (macos-latest, examples)	33m 43s
test (macos-latest, other)	24m 3s
test (windows-latest, cargo-dylint)	1h 35m 38s
test (windows-latest, examples)	47m 20s
test (windows-latest, other)	35m 46s
all-checks	3s
	7h 24m 21s

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