refactor(language_server): use LintRunner

[Sysix]

closes #13795
Now the language server uses LintRunner which lints in memory files with tsgolint 🥳

Cleanup the ServerLinter to use only IsolatedLinter and no TsgoLinter.

[Sysix]

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• feat(language_server): respect disable directives for type-aware rules #15170
• refactor(language_server): remove ServerLinterDiagnostics #15169
• refactor(language_server): Backend checks the correct LintOptions::Run #15166
• refactor(language_server): use LintRunner #14472 👈 (View in Graphite)
• refactor(language_server): send in memory source text to tsgolint #14733
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #14472 will not alter performance

_{Comparing 10-10-refactor_language_server_use_lintrunner_ (27c0255) with 10-17-feat_language_server_send_in_memory_source_text_to_tsgolint_ (ecd3fb5)}

Summary

✅ 4 untouched
⏩ 33 skipped¹

Footnotes

1. 33 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Copilot]

Pull Request Overview

This PR refactors the language server's linting architecture by consolidating type-aware (TsGoLint) and regular (Oxlint) linting into a unified LintRunner abstraction. Previously, the language server managed two separate linters (IsolatedLintHandler for Oxlint and TsgoLinter for type-aware checking), which required complex coordination logic.

Key changes:

• Replaced dual linter architecture with unified LintRunner that coordinates both regular and type-aware linting internally
• Removed the separate TsgoLinter module from the language server codebase
• Simplified the ServerLinter by delegating type-aware linting logic to LintRunner

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crates/oxc_linter/src/lint_runner.rs	Added run_source method to enable language server to run both linting modes on in-memory source text
crates/oxc_language_server/src/linter/tsgo_linter.rs	Removed entire file as functionality moved to LintRunner
crates/oxc_language_server/src/linter/isolated_lint_handler.rs	Refactored to use LintRunner instead of LintService directly, now handles both linting modes
crates/oxc_language_server/src/linter/server_linter.rs	Simplified by removing dual-linter coordination logic and delegating to IsolatedLintHandler
crates/oxc_language_server/src/linter/mod.rs	Removed tsgo_linter module export
editors/vscode/tests/e2e_server.spec.ts	Updated test timing and helper function calls for consistency
crates/oxc_language_server/src/snapshots/*	Updated test snapshots to reflect behavioral changes in lint execution modes

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