Add bzlmod support for system_python. #23621
Merged
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Add bzlmod support for system_python.
#test-continuous
This creates a module extension for system python so that it can be used in bzlmod builds. The pip_parse setup (dynamically building a new repo) doesn't work in the new bzlmod model, so we use the regular pip extension pointed at system_python's interpreter.
Remaining work to get off WORKSPACE:
Closes #18750
Closes #23313
Closes #23307