Fix the biggest cause of #6462 by wrapping lots of JS->Rust transitions in catch_panic, and calling resume_panic after all Rust->JS transitions return.
Known issue:
* Finalizers can be called in response to any JS engine allocation that triggers a GC, so it's possible for a Rust object's Drop implementation that panics to leave an interrupted panic in TLS. This is why 30d8009 is part of this PR; the underlying problem is that there's no clear place to resume the panic after it is interrupted.
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#6462 (github issue number if applicable).
- [X] There are tests for these changes OR
Source-Repo: https://github.com/servo/servo
Source-Revision: 87d991ebd24886051ad1131bdbe3b9019cb1c4b3