[Merged by Bors] - Fix to weak_trace for boa_tester

[nekevss]

This Pull Request fixes the current issue with the boa_gc when running boa_tester in parallel on Ubuntu. It looks like since we are running the gc in parallel something may not being cleaned up correctly that creates a reference cycle. The below changes should account for that.

It changes the following:

• Updates weak_trace to account for Gc reference cycles.

[codecov]

Codecov Report

Merging #2470 (f4442f7) into main (920a86f) will increase coverage by 0.33%.
The diff coverage is 20.00%.

@@            Coverage Diff             @@
##             main    #2470      +/-   ##
==========================================
+ Coverage   51.07%   51.40%   +0.33%     
==========================================
  Files         345      335      -10     
  Lines       35942    35626     -316     
==========================================
- Hits        18357    18315      -42     
+ Misses      17585    17311     -274     

Impacted Files	Coverage Δ
boa_gc/src/internals/gc_box.rs	78.68% <20.00%> (-6.06%)	⬇️
boa_gc/src/pointers/ephemeron.rs	47.36% <0.00%> (-44.74%)	⬇️
boa_gc/src/pointers/weak.rs	44.44% <0.00%> (-44.45%)	⬇️
boa_gc/src/internals/ephemeron_box.rs	48.71% <0.00%> (-38.47%)	⬇️
boa_interner/src/lib.rs	80.67% <0.00%> (-3.37%)	⬇️
boa_gc/src/trace.rs	78.43% <0.00%> (-1.97%)	⬇️
boa_gc/src/lib.rs	98.42% <0.00%> (-1.58%)	⬇️
boa_examples/src/bin/jsset.rs
boa_examples/src/bin/modulehandler.rs
boa_examples/src/bin/loadfile.rs
... and 11 more

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[raskad]

bors r+

[bors]

Pull request successfully merged into main.

Build succeeded:

• Build and Test (macos-latest)
• Build and Test (windows-latest)
• Coverage
• Misc