Respect workspace-wide `requires-python` in interpreter selection #8129

Job	Run time
build binary \| linux	4m 49s
build binary \| windows	1m 55s
build binary \| macos aarch64	1m 18s
build binary \| macos x86_64	1m 30s
cargo clippy \| ubuntu	53s
cargo clippy \| windows	1m 1s
cargo shear	24s
cargo fmt	31s
cargo test \| ubuntu	4m 5s
cargo test \| windows	5m 51s
Determine changes	7s
cargo test \| macos	4m 32s
typos	6s
check windows trampoline	2m 34s
benchmarks	5m 7s
check system \| homebrew python on macos aarch64	18s
check cache \| macos aarch64	10s
check system \| python on macos aarch64	24s
check system \| python on macos x86_64	28s
check system \| python3.10 on windows	44s
check system \| python3.10 on windows x86	1m 3s
check system \| python3.13 on windows	1m 25s
check system \| python3.12 via chocolatey	1m 51s
check system \| embedded python3.10 on windows	39s
check cache \| ubuntu	53s
integration test \| github actions	8s
integration test \| conda on ubuntu	31s
ecosystem test \| prefecthq/prefect	2m 3s
ecosystem test \| pallets/flask	15s
check system \| python on debian	39s
check system \| python on fedora	33s
check system \| python via pyenv	2m 28s
check system \| python on opensuse	41s
check system \| pypy on ubuntu	34s
check system \| pyston	3m 52s
check system \| python on rocky linux 8	26s
check system \| python on rocky linux 9	34s
check system \| python on ubuntu	17s
check system \| alpine	50s
check system \| amazonlinux	26s
check system \| conda3.8 on linux	41s

Provide feedback