Implement inline caching tests and cleanup

[HalidOdat]

It changes the following:

• Implements some tests for internal method inline chaching
• Test object internal methods
• Test Get and Set inline caching opcodes
• Cleanup

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	96,310	96,310	0
Passed	80,819	80,819	0
Ignored	3,681	3,681	0
Failed	11,810	11,810	0
Panics	0	0	0
Conformance	83.92%	83.92%	0.00%

[codecov]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (6ddc2b4) 47.24% compared to head (3681768) 48.87%.
Report is 15 commits behind head on main.

❗ Current head 3681768 differs from pull request most recent head 96302de. Consider uploading reports for the commit 96302de to get more accurate results

Files	Patch %	Lines
core/engine/src/vm/opcode/set/property.rs	46.15%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3513      +/-   ##
==========================================
+ Coverage   47.24%   48.87%   +1.63%     
==========================================
  Files         476      472       -4     
  Lines       46892    48500    +1608     
==========================================
+ Hits        22154    23705    +1551     
- Misses      24738    24795      +57     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[raskad]

Really nice refactor!