Use PyDict_Pop()

[serhiy-storchaka]

PyDict_Pop() can be used in two cases:

• If the PyDict_Get* call is followed by the PyDict_Del* call.
• If the PyDict_Del* call is followed by the code that handles KeyError.

In both cases the use of PyDict_Pop() can make the code clearer.

Linked PRs

• gh-116437: Use new C API PyDict_Pop() to simplify the code #116438