GH-142718: JIT: Fix crash due to incorrect caching on side exits when exiting jitted code.

[markshannon]

• Make sure that stack is in correct state at side exits with TOS cached values
• Simplify choice of cached items for side exits

• Issue: SEGV at Python/generated_cases.c.h _PyEval_EvalFrameDefault in JIT #142718

[Fidget-Spinner]

Just one comment, but not a blocker for merge.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM Raspbian 3.x (tier-3) has failed when building commit 27a2e49.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/424/builds/12355) and take a look at the build logs.
4. Check if the failure is related to this commit (27a2e49) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/424/builds/12355

Failed tests:

• test_annotationlib

Failed subtests:

• test_nonexistent_attribute - test.test_annotationlib.TestForwardRefFormat.test_nonexistent_attribute

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "/var/lib/buildbot/workers/3.x.gps-raspbian.nondebug/build/Lib/test/test_annotationlib.py", line 160, in test_nonexistent_attribute
    self.assertEqual(epsilon_anno, support.EqualToForwardRef("some | {obj, module}", owner=f))
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: ForwardRef('some | {module, obj}', owner=[79 chars]3f0>) != EqualToForwardRef('some | {obj, module}',[86 chars]3f0>)


Traceback (most recent call last):
  File "/var/lib/buildbot/workers/3.x.gps-raspbian.nondebug/build/Lib/test/test_annotationlib.py", line 160, in test_nonexistent_attribute
    self.assertEqual(epsilon_anno, support.EqualToForwardRef("some | {obj, module}", owner=f))
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: ForwardRef('some | {module, obj}', owner=[79 chars]760>) != EqualToForwardRef('some | {obj, module}',[86 chars]760>)

[Fidget-Spinner]

Considering that build doesn't even use the JIT. It's unrelated.