Improve strictness around Map and Set objects

[jedel1043]

Fixes #4493.
Depends on #4495.

This PR improves strictness on the implementations of Map and Set by ensuring borrows are as small as possible, and also by reimplementing our lock structs to be a bit less sporadic about when they lock and unlock the underlying map.

Additionally, it cleans up our implementations to use newer APIs such as the js_error macro, upcast/downcast, etc.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	50,595	50,595	0
Passed	47,678	47,678	0
Ignored	2,036	2,036	0
Failed	881	881	0
Panics	0	0	0
Conformance	94.23%	94.23%	0.00%

[codecov]

Codecov Report

❌ Patch coverage is 82.16561% with 56 lines in your changes missing coverage. Please review.
✅ Project coverage is 57.13%. Comparing base (6ddc2b4) to head (2a3fd05).
⚠️ Report is 579 commits behind head on main.

Files with missing lines	Patch %	Lines
core/engine/src/object/builtins/jsset.rs	16.66%	20 Missing ⚠️
core/engine/src/builtins/map/mod.rs	81.37%	19 Missing ⚠️
core/engine/src/builtins/set/mod.rs	86.92%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4497      +/-   ##
==========================================
+ Coverage   47.24%   57.13%   +9.89%     
==========================================
  Files         476      503      +27     
  Lines       46892    57347   +10455     
==========================================
+ Hits        22154    32768   +10614     
+ Misses      24738    24579     -159     

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