Use after free error in //src/dbSta/test:dbsta_unittest

Describe the bug

https://github.com/The-OpenROAD-Project/OpenROAD/blob/1e21a071b73dc8758b2a2ce02dfab351d2f1c39c/src/dbSta/test/cpp/TestDbSta.cc#L280-L332 relies on calling using memory previously free'ed and expecting that the result returned is different.

This causes test failures under asan.

This issue is to come up with a different way of performing the same test without the reliance on undefined behavior. One potential way is to assert that the timing graph/critical path has changed?

Expected Behavior

Test would ideally not rely on use-after-free behavior.

Environment

N/A

To Reproduce

bazelisk test src/dbSta/test:dbsta_unittest --cache_test_results=no  -c dbg --config=asan  --action_env=ASAN_OPTIONS="detect_odr_violation=0"

Relevant log output

Screenshots

No response

Additional Context

No response