Fix the Vite worker setup in the ESM integration docs

[Aron Lee (aron-intframe)]

Fixes #4045

Description

The Vite section of docs/integrate-esm.md calls self.MonacoEnvironment.getWorkerUrl inside getWorker, but never defines it, so pasting the snippet yields self.MonacoEnvironment.getWorkerUrl is not a function and the editor falls back to the main thread (still reproduces on monaco-editor 0.56.0 + Vite 7.3.6). Its monaco-editor/esm/vs/... paths also stopped resolving with the 0.56.0 exports map (#5155, ./* maps to ./esm/vs/*.js): Rollup fails with Failed to resolve import "monaco-editor/esm/vs/editor/editor.worker?worker".

This rewrites the snippet to Vite's ?worker imports (same shape as samples/browser-esm-vite-react/src/userWorker.ts) using the paths that resolve on 0.56.0 (monaco-editor/editor/editor.worker, monaco-editor/languages/features/<lang>/<lang>.worker), and adds a one-line note with the pre-0.56 paths.

Not covered here: the plain-webpack section and the samples/browser-esm-webpack* configs still use monaco-editor/esm/vs/... paths, which have the same resolution problem on 0.56.0.

User-Facing Changes

Docs only.

Tests

Ran the snippet as extracted from the doc through vite build/preview and the dev server in headless Chromium. Before: 0 workers, 0/0 JSON/TS markers, the error above. After: editor/json/ts workers start, 1/1 markers, diff computed, no console errors. The pre-0.56 note was checked the same way against 0.55.1.

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Written by an agent (Claude Code, claude-opus-5) on behalf of INTFRAME.

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