gh-130740: Move some stdbool.h includes after Python.h (#130738)

Move some `#include <stdbool.h>` after `#include "Python.h"` when `pyconfig.h` is not
included first and when we are in a platform-agnostic context. This is to avoid having
features defined by `stdbool.h` before those decided by `Python.h`.

Author: chouquette

Misc/NEWS.d/next/Build/2025-03-01-18-27-42.gh-issue-130740.nDFSHR.rst

@@ -0,0 +1,2 @@
+Ensure that ``Python.h`` is included before ``stdbool.h`` unless ``pyconfig.h``
+is included before or in some platform-specific contexts.

Parser/string_parser.c

@@ -1,11 +1,11 @@
-#include <stdbool.h>
-
 #include <Python.h>
 
 #include "tokenizer.h"
 #include "pegen.h"
 #include "string_parser.h"
 
+#include <stdbool.h>
+
 //// STRING HANDLING FUNCTIONS ////
 
 static int

Python/flowgraph.c

@@ -1,6 +1,3 @@
-
-#include <stdbool.h>
-
 #include "Python.h"
 #include "pycore_flowgraph.h"
 #include "pycore_compile.h"
@@ -11,6 +8,8 @@
 #include "opcode_metadata.h"      // _PyOpcode_opcode_metadata, _PyOpcode_num_popped/pushed
 #undef NEED_OPCODE_METADATA
 
+#include <stdbool.h>
+
 
 #undef SUCCESS
 #undef ERROR