Add comprehensive NES rename validation tests

[Copilot]

Expands test coverage for the NES (Name Element Symbol) rename validator from 11 to 43 test cases.

New test scenarios

• Inheritance: Deep class hierarchies, interface chains, multiple inheritance (extends + implements)
• Member types: Properties, parameters, accessors, arrow function params
• Visibility modifiers: Static, private, protected members
• Scoping: Nested functions, module exports, outer scope conflicts
• Type constructs: Optional properties, readonly members, const enums

Test format

Tests use annotation comments in the fixture file:

class ChildClass extends ParentClass {
    //// { "title": "Deep inheritance - no rename to grandparent", "oldName": "childMethod", "newName": "grandMethod", "expected": "no" }
    childMethod(): void { }
}

Original prompt

Can you write more tests for me

The user has attached the following file paths as relevant context:

• src\extension\typescriptContext\serverPlugin\src\node\test\nes.spec.ts
• src\extension\typescriptContext\serverPlugin\fixtures\nes\p1\source\test.ts
• .github\instructions\vitest-unit-tests.instructions.md
• .github\copilot-instructions.md

Created from VS Code.

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