fix: add missing multiprocessing.popen_forkserver.pyi stubs #8425
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X-Ref: #6799
This adds best-effort types to multiprocessing.popen_fork to continue to address issue #6799
The source file can be viewed here:
https://github.com/python/cpython/blob/main/Lib/multiprocessing/popen_forkserver.py
Note that the forkserver version inherits from
popen_fork
, so_launch
is called explicitly as was the case there. This only includes new or overriding attributes on thePopen
class, ignoring attributes likepid
which are identical with the parent.sentinel
is defined here even though it matchespopen_fork.Popen
because it doesn't have the same condition as the comment in the other stub.