Support Object.defineProperty in document symbols

[gabritto]

Follow-up to #2207 after #2513.
Also refactored the code so we pass in a name directly when we add a symbol in the special cases where that's needed.

[Copilot]

Pull request overview

Adds support for surfacing Object.defineProperty-defined properties in document symbols (navigation bar), with a small refactor to pass explicit “name” nodes for special-case symbol creation.

Changes:

• Extend document symbol collection to recognize Object.defineProperty(...) expando patterns and attach get/set members as children.
• Refactor newDocumentSymbol call sites to optionally pass an explicit name node (instead of inferring it from node).
• Update fourslash reference baseline to reflect the new symbol output.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
internal/ls/symbols.go	Detects Object.defineProperty calls during symbol collection and refactors symbol creation to accept an explicit name node.
testdata/baselines/reference/fourslash/documentSymbols/navigationBarFunctionPrototype.baseline	Updates expected document symbol output to include defineProperty-defined properties and their accessors.