ruff

62c224e1 - Use configured extension mapping to select code block language (#22934)

Use configured extension mapping to select code block language (#22934) - Adds `Language::get_extension` to look up extension mappings without a `Path` object - Adds logic to `format_code_blocks` to obey any configured extension mapping when determining the source type of a code block - Adds test case showing formatting a `py` code block as if it was `pyi` by using the configured extension map This will allow ty run ruff formatting on md test files while force-mapping `py` blocks to `pyi` for condensed formatting results. Issue #22639