gh-112136: Restore removed _PyArg_Parser #125

Job	Run time
Interpreter (Debug)	7m 3s
Free-Threaded (Debug)	10m 4s
i686-pc-windows-msvc/msvc (Debug)	18m 2s
i686-pc-windows-msvc/msvc (Release)	21m 9s
x86_64-pc-windows-msvc/msvc (Debug)	16m 55s
x86_64-pc-windows-msvc/msvc (Release)	19m 34s
aarch64-pc-windows-msvc/msvc (Debug)	4m 5s
aarch64-pc-windows-msvc/msvc (Release)	5m 32s
x86_64-apple-darwin/clang (Debug)	12m 57s
x86_64-apple-darwin/clang (Release)	15m 19s
aarch64-apple-darwin/clang (Debug)	8m 34s
aarch64-apple-darwin/clang (Release)	16m 35s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 49s
x86_64-unknown-linux-gnu/gcc (Release)	17m 45s
x86_64-unknown-linux-gnu/clang (Debug)	7m 42s
x86_64-unknown-linux-gnu/clang (Release)	13m 42s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 9m 26s
aarch64-unknown-linux-gnu/gcc (Release)	53m 31s
aarch64-unknown-linux-gnu/clang (Debug)	1h 4m 37s
aarch64-unknown-linux-gnu/clang (Release)	35m 41s
	7h 6m 2s

Provide feedback