fix(vm/opcode/define,set,call): convert panics to EngineError::Panic using js_expect

[KaustubhOG]

Part of #3241.
Converts all convertible .expect() panics to .js_expect()? in:

• opcode/define/class/getter.rs(14)
• opcode/define/class/method.rs (14)
• opcode/define/class/setter.rs (14)
• opcode/set/name.rs (1)
• opcode/set/private.rs (2)
• opcode/call/mod.rs (6)

Skipped with rationale:

set/private.rs SetPrivateMethod/SetPrivateSetter/SetPrivateGetter — return () instead of JsResult<()>
call/mod.rs remaining .expect() calls spec-guaranteed invariants (ECMAScript ! notation) maybee genuine unreachable invariants inside async context.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	52,963	52,963	0
Passed	50,545	50,545	0
Ignored	1,426	1,426	0
Failed	992	992	0
Panics	2	2	0
Conformance	95.43%	95.43%	0.00%

Tested main commit: 0592ecc32629c18d43dc136b6675ef980f37a061
Tested PR commit: ea672a0297f43a0326c28d714cf8e10408fde309
Compare commits: 0592ecc...ea672a0

[codecov]

Codecov Report

❌ Patch coverage is 38.88889% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.76%. Comparing base (6ddc2b4) to head (ea672a0).
⚠️ Report is 915 commits behind head on main.

Files with missing lines	Patch %	Lines
core/engine/src/vm/opcode/define/class/setter.rs	16.66%	5 Missing ⚠️
core/engine/src/vm/opcode/define/class/getter.rs	33.33%	4 Missing ⚠️
core/engine/src/vm/opcode/define/class/method.rs	66.66%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #5228       +/-   ##
===========================================
+ Coverage   47.24%   59.76%   +12.51%     
===========================================
  Files         476      582      +106     
  Lines       46892    63454    +16562     
===========================================
+ Hits        22154    37922    +15768     
- Misses      24738    25532      +794     

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