Add opt-in uv-build Python prebuilt installs #73

Job	Run time
test-on-windows (windows-latest, 3.12.2)	1m 18s
test-on-windows (windows-latest, 3.12.2, https://mirrors.huaweicloud.com/python/)	1m 15s
test-on-linux (ubuntu-latest, 3.12.2)	2m 3s
test-on-linux (ubuntu-latest, 3.12.2, https://mirrors.huaweicloud.com/python/)	2m 10s
	6m 46s

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