Spec alignment create method property

[MayankRaj435]

This PR aligns Boa more closely with the ECMAScript specification by implementing missing abstract operations and centralizing them in operations.rs.

1. Implement CreateMethodProperty (§7.3.5)

Added the create_method_property helper to core/engine/src/object/operations.rs.

Before:

// core/engine/src/object/operations.rs
// todo: CreateMethodProperty

After:

pub(crate) fn create_method_property<K, V>(
    &self,
    key: K,
    value: V,
    context: &mut InternalMethodPropertyContext<'_>,
) -> JsResult<bool>
where
    K: Into<PropertyKey>,
    V: Into<JsValue>,
{
    let new_desc = PropertyDescriptor::builder()
        .value(value)
        .writable(true)
        .enumerable(false)
        .configurable(true);
    self.__define_own_property__(&key.into(), new_desc.into(), context)
}

2. Move CopyDataProperties (§7.3.26)

Moved the implementation from jsobject.rs to operations.rs to center abstract operations as suggested by internal todo comments.

Before:

• jsobject.rs: Contained the implementation of copy_data_properties.
• operations.rs: Contained // todo: CopyDataProperties.

After:

• jsobject.rs: Implementation removed.
• operations.rs:

pub fn copy_data_properties<K>(
    &self,
    source: &JsValue,
    excluded_keys: Vec<K>,
    context: &mut Context,
) -> JsResult<()> {
    // ... (Implementation moved here)
}

Tests

• Verified with cargo check -p boa_engine.
• Confirmed formatting with cargo fmt.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	52,963	52,963	0
Passed	49,902	49,902	0
Ignored	2,222	2,222	0
Failed	839	839	0
Panics	0	0	0
Conformance	94.22%	94.22%	0.00%

Tested main commit: cf48c75d45aeaece9ada406250030e28184b1acd
Tested PR commit: a384eb57e246180d1329f361ed86b6a8ec2a0e15
Compare commits: cf48c75...a384eb5

[MayankRaj435]

@jedel1043 I have done the changes ,please review it once and do lemme know ,thanks

[codecov]

Codecov Report

❌ Patch coverage is 82.85714% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.47%. Comparing base (6ddc2b4) to head (a384eb5).
⚠️ Report is 816 commits behind head on main.

Files with missing lines	Patch %	Lines
core/engine/src/object/operations.rs	88.46%	3 Missing ⚠️
core/engine/src/vm/opcode/define/class/method.rs	66.66%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #5013       +/-   ##
===========================================
+ Coverage   47.24%   58.47%   +11.22%     
===========================================
  Files         476      559       +83     
  Lines       46892    61450    +14558     
===========================================
+ Hits        22154    35930    +13776     
- Misses      24738    25520      +782     

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[jedel1043]

Looks good! Thanks!