Avoid applying PEP 646 rewrites in invalid contexts (#14234) #91

Job	Run time
Determine changes	9s
cargo fmt	21s
pre-commit	59s
mkdocs	5m 40s
python package	1m 25s
cargo test (linux)	4m 11s
cargo test (windows)	9m 11s
cargo build (msrv)	3m 32s
cargo build (release)	4m 51s
cargo clippy	1m 57s
cargo fuzz	4m 19s
cargo test (wasm)	1m 32s
cargo shear	27s
formatter instabilities and black similarity	3m 56s
benchmarks	0s
test scripts	1m 4s
test ruff-lsp	34s
Fuzz the parser	0s
ecosystem	0s
	44m 8s

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