Make isolated a global argument #6229

Job	Run time
build binary \| linux	2m 1s
build binary \| macos x86_64	2m 17s
build binary \| macos aarch64	1m 19s
build binary \| windows	1m 25s
cargo clippy \| ubuntu	52s
cargo clippy \| windows	1m 51s
cargo fmt	28s
cargo shear	26s
cargo test \| ubuntu	4m 8s
cargo test \| windows	5m 40s
Determine changes	9s
cargo test \| macos	5m 13s
check windows trampoline	2m 41s
benchmarks	1m 55s
check system \| homebrew python on macos aarch64	19s
check system \| python on macos aarch64	15s
check cache \| macos aarch64	15s
check system \| python3.12 via chocolatey	1m 38s
check system \| embedded python3.10 on windows	29s
check system \| python3.10 on windows	47s
check system \| python3.13 on windows	1m 40s
check system \| python3.10 on windows x86	50s
check cache \| ubuntu	46s
ecosystem test \| prefecthq/prefect	2m 0s
check system \| python on opensuse	36s
ecosystem test \| pallets/flask	11s
check system \| python on fedora	30s
check system \| python on ubuntu	33s
check system \| python on debian	50s
check system \| alpine	32s
check system \| python via pyenv	1m 49s
check system \| conda3.8 on linux	42s
check system \| pypy on ubuntu	29s
check system \| conda3.11 on linux	40s
check system \| conda3.8 on windows	2m 25s
check system \| pyston	3m 52s
check system \| conda3.11 on windows	2m 51s
check system \| python on rocky linux 8	31s
check system \| conda3.8 on macos	46s
check system \| conda3.11 on macos	55s
check system \| python on rocky linux 9	29s
check system \| amazonlinux	26s
check system \| python on macos x86_64	25s
	58m 56s

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