Consider VS Code cell metadata to determine valid code cells #31835

Job	Run time
mkdocs	2m 35s
Determine changes	8s
cargo fmt	15s
pre-commit	34s
python package	1m 14s
cargo clippy	1m 45s
benchmarks	4m 56s
cargo build (release)	4m 36s
cargo build (msrv)	3m 9s
cargo shear	23s
cargo test (linux)	4m 2s
cargo fuzz	4m 58s
cargo test (wasm)	1m 31s
cargo test (windows)	7m 45s
test scripts	1m 1s
formatter instabilities and black similarity	0s
test ruff-lsp	20s
ecosystem	8m 39s
Fuzz the parser	0s
	47m 51s

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