Sync pre-release CPython main branch from GitHub (2026-06-30)

Summary:
Imported python/cpython `3.16.0a0` from upstream rev [`5717518`](https://www.github.com/python/cpython/commit/5717518fb3ed6f34716683e08ec372267d871d21) (committed 2026-06-30 00:05:02+00:00).

# Commit Info

- Base: (`3.16.0a0`) - [`7d128e3`](https://www.github.com/python/cpython/commit/7d128e319f3730e776a9161a4b5e9de95c802eaf) (commit date: 2026-06-29 02:04:10+00:00)
- Imported: (`3.16.0a0`) - [`5717518`](https://www.github.com/python/cpython/commit/5717518fb3ed6f34716683e08ec372267d871d21) (commit date: 2026-06-30 00:05:02+00:00)

# Noteworthy file changes

- Test files (1 added)
- Low-signal files (15 added) (NEWS.d, docs, .github)

Complete list of added/removed files: https://www.internalfb.com/intern/everpaste/?color=0&handle=GN5N6CvpQf1ilV8EAAY5FQ0DcSY5br0LAAAz

Differential Revision: D110143618

fbshipit-source-id: 375411414e768ad3811bdbf9f871bb2ec2ec09fb

Author: generatedunixname1734921407115435

cinderx/Interpreter/3.16/Includes/Python/ceval_macros.h

@@ -389,14 +389,15 @@ static void dtrace_function_return(_PyInterpreterFrame *);
 // for an exception handler, displaying the traceback, and so on
 #define INSTRUMENTED_JUMP(src, dest, event) \
 do { \
+    _Py_CODEUNIT *_dest = (dest); \
     if (tstate->tracing) {\
-        next_instr = dest; \
+        next_instr = _dest; \
     } else { \
         _PyFrame_SetStackPointer(frame, stack_pointer); \
-        next_instr = _Py_call_instrumentation_jump(this_instr, tstate, event, frame, src, dest); \
+        next_instr = _Py_call_instrumentation_jump(this_instr, tstate, event, frame, src, _dest); \
         stack_pointer = _PyFrame_GetStackPointer(frame); \
         if (next_instr == NULL) { \
-            next_instr = (dest)+1; \
+            next_instr = _dest + 1; \
             JUMP_TO_LABEL(error); \
         } \
     } \