Do not discover virtual environment interpreters in `uv venv --python ...` #6713

Job	Run time
cargo clippy \| ubuntu	53s
Determine changes	8s
cargo clippy \| windows	1m 1s
build binary \| linux	1m 36s
build binary \| macos aarch64	1m 15s
build binary \| macos x86_64	1m 54s
build binary \| windows	1m 54s
cargo fmt	24s
cargo shear	23s
cargo test \| ubuntu	4m 18s
cargo test \| windows	5m 9s
check windows trampoline	2m 36s
cargo test \| macos	4m 9s
benchmarks	2m 1s
check system \| python on macos aarch64	16s
check cache \| macos aarch64	12s
check system \| homebrew python on macos aarch64	24s
ecosystem test \| prefecthq/prefect	1m 53s
integration test \| maturin	34s
ecosystem test \| pallets/flask	11s
check system \| alpine	20s
check cache \| ubuntu	46s
check system \| python on debian	42s
check system \| python on fedora	40s
check system \| python on opensuse	36s
check system \| pypy on ubuntu	19s
check system \| pyston	3m 47s
check system \| python on rocky linux 8	28s
check system \| python on rocky linux 9	25s
check system \| python on ubuntu	15s
check system \| amazonlinux	25s
check system \| python via pyenv	1m 44s
check system \| python on macos x86_64	23s
check system \| python3.10 on windows x86	55s
check system \| python3.10 on windows	53s
check system \| python3.12 via chocolatey	51s
check system \| python3.13 on windows	1m 17s
check system \| conda3.8 on linux	36s
check system \| embedded python3.10 on windows	36s
check system \| conda3.11 on linux	42s
check system \| conda3.8 on windows	2m 22s
check system \| conda3.11 on windows	2m 26s
check system \| conda3.8 on macos	41s
check system \| conda3.11 on macos	41s
	54m 1s

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