Docstring formatting: Preserve tab indentation when using `indent-style=tabs` #24791

Job	Run time
cargo fmt	15s
mkdocs	2m 14s
pre-commit	30s
Determine changes	10s
python package	1m 9s
cargo fuzz	4m 32s
benchmarks	6m 21s
cargo clippy	1m 51s
cargo test (linux)	3m 54s
cargo test (wasm)	1m 11s
cargo test (windows)	5m 55s
cargo udeps	1m 48s
formatter instabilities and black similarity	3m 40s
test scripts	52s
ecosystem	5m 47s
test ruff-lsp	15s
	40m 24s

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