patch 9.0.2036: if_python: rework python3.12 build dependency

Problem:  if_python: rework python3.12 build dependency
          (after 9.0.1996)
Solution: use PyTuple_Size instead of inlining the Py_SIZE
          into the Vim code base

Use a simpler fix for Python 3.12 build issues

Python 3.12 introduced link dependencies to their `Py_SIZE()` inline
function, which #13290 fixed by copying the inline function to Vim's
Python binding code. This works but it's fragile, as a future update may
change the implementation of `Py_SIZE` and there is no way for us to
know.

The reason we need `Py_SIZE` to begin with is that we use
`PyTuple_GET_SIZE()` which calls that. Just fix it by mapping that to
(confusingly similarly named) `PyTuple_Size()`, which we already do in
the stable ABI implementation. There's a minor performance cost in that
it's not inlined and it does error checking but that's fine as we only
call this function rarely (in an error handler).

related: #13290
closes: #13359

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2036,
 /**/
     2035,
 /**/