chore(profiler): fix regression test for frame object garbage collect…

…ion in Python 3.11 (#4937)

## Description
#4901 added a fix to properly decrement frametype objects in Python 3.11
in our stack collector, with a regression test. We found that this
regression test does not properly assert that frametype objects were all
garbage collected, which this test fixes.

Specifically, the previous change was looking for only frame objects
related to a function call `_foo()`. However, after reverting the fix
from #4901 this test still passed, because all frametype objects have
been garbage collected. This change makes a broader assertion instead
that all frametype objects have been garbage collected, which does
expectedly fail if the fix from #4901 is reverted.

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documentation](https://github.com/DataDog/dd-trace-py/tree/1.x/docs)
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## Reviewer Checklist
- [ ] Title is accurate.
- [ ] Description motivates each change.
- [ ] No unnecessary changes were introduced in this PR.
- [ ] Avoid breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes unless absolutely necessary.
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included in the code or PR.
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guidelines](https://ddtrace.readthedocs.io/en/stable/contributing.html#Release-Note-Guidelines),
or else `changelog/no-changelog` label added.
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- [ ] Change contains telemetry where appropriate (logs, metrics, etc.).
- [ ] Telemetry is meaningful, actionable and does not have the
potential to leak sensitive data.

Co-authored-by: Brett Langdon <[email protected]>

tests/profiling/collector/test_stack.py

@@ -761,7 +761,4 @@ def _foo():
             _foo()
 
     gc.collect()  # Make sure we don't race with gc when we check frame objects
-    frametype_objs = [obj for obj in gc.get_objects() if isinstance(obj, FrameType)]
-    for obj in frametype_objs:
-        # Ensure that all frames relating to _foo() have been gc'd already
-        assert obj.f_code.co_name != "_foo"
+    assert sum(isinstance(_, FrameType) for _ in gc.get_objects()) == 0