Remove special pre-visit for module docstrings #22930

Job	Run time
mkdocs	2m 14s
pre-commit	48s
cargo fmt	14s
Determine changes	7s
python package	1m 8s
cargo fuzz	4m 36s
cargo test (linux)	3m 44s
cargo clippy	1m 54s
benchmarks	6m 24s
cargo test (wasm)	1m 22s
cargo udeps	1m 55s
cargo test (windows)	5m 35s
formatter instabilities and black similarity	0s
test scripts	50s
test ruff-lsp	20s
ecosystem	7m 42s
	38m 53s

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