fixed show ArrayBuffer constructor as [Function: ArrayBuffer]

[sahanaxzy]

Summary

Fixes how constructors are shown in console/debug output so that only real class constructors use [class Name], while built-ins like ArrayBuffer use [Function: Name].

Solves #4934

Changes

Modified core/engine/src/value/display.rs

only shows [class Name] when the value is an OrdinaryFunction with is_class_constructor(); otherwise shows callables as [Function: Name].

Replace .map(...).unwrap_or(false) with .is_some_and(...) to satisfy Clippy.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	52,963	52,963	0
Passed	49,687	49,687	0
Ignored	2,262	2,262	0
Failed	1,014	1,014	0
Panics	0	0	0
Conformance	93.81%	93.81%	0.00%

Tested main commit: b3d820369072123ded8defc927405b99b9012648
Tested PR commit: df98b4932c363b5347ef03b24378f4bc56d57555
Compare commits: b3d8203...df98b49

[codecov]

Codecov Report

❌ Patch coverage is 29.41176% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 57.85%. Comparing base (6ddc2b4) to head (df98b49).
⚠️ Report is 775 commits behind head on main.

Files with missing lines	Patch %	Lines
core/engine/src/value/display.rs	29.41%	12 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #4935       +/-   ##
===========================================
+ Coverage   47.24%   57.85%   +10.60%     
===========================================
  Files         476      556       +80     
  Lines       46892    60929    +14037     
===========================================
+ Hits        22154    35249    +13095     
- Misses      24738    25680      +942     

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