py-fuzzer: recommend using `uvx` rather than `uv run` to run the fuzzer #36445

Job	Run time
cargo build (release)	0s
cargo fmt	17s
Determine changes	8s
mkdocs	2m 34s
pre-commit	35s
python package	1m 21s
cargo build (msrv)	4m 3s
benchmarks	4m 58s
cargo fuzz build	0s
cargo clippy	2m 7s
cargo shear	23s
cargo test (linux)	1m 45s
cargo test (linux, release)	3m 35s
cargo test (wasm)	1m 38s
cargo test (windows)	5m 17s
formatter instabilities and black similarity	3m 21s
test scripts	55s
fuzz parser	5m 53s
ecosystem	4m 3s
test ruff-lsp	33s
	43m 26s

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