selector_BaseSelectorImpl._key_from_fd reimplements.get()

This internal method isn't documentedhttps://docs.python.org/3/library/selectors.html which means it likely can be replaced with.get() which would reduce runtime in the select loops

current:

removed:

Linked PRs

• gh-106554: Replace_BaseSelectorImpl._key_from_fd with a simpleget #106555