Support Monaco Editor 0.56 public exports

[szzhoujiarui]

Upgrade Monaco Editor to 0.56 and replace private esm/vs imports with the package's public exports.

Register folding, find, codicon, and JSON features through public entry points. Retain Airflow's explicit registration of its patched Python grammar so f-string tokenization remains intact.

This keeps Monaco workers and language features compatible with 0.56 and avoids private module paths that no longer resolve in Vite.

closes: #70929

Testing

• CI=true corepack pnpm@10.25.0 install --frozen-lockfile
• corepack pnpm@10.25.0 test — 102 files and 777 tests passed
• corepack pnpm@10.25.0 exec vitest run src/components/MonacoEditor/pythonFStrings.test.ts — 12 tests passed
• corepack pnpm@10.25.0 lint
• corepack pnpm@10.25.0 build
• Pre-commit hooks for all changed files
• breeze ci selective-check --commit-ref 421c0c9
• breeze testing ui-e2e-tests --test-pattern "dag-code-tab.spec.ts" --workers 1 — blocked during environment checks because Docker is unavailable in the current environment

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Was generative AI tooling used to co-author this PR?

• Yes — MonkeyCode (GPT-5.6 Sol)

Generated-by: MonkeyCode (GPT-5.6 Sol) following the guidelines

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Drafted-by: MonkeyCode (GPT-5.6 Sol); reviewed by @szzhoujiarui before posting

[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache Airflow community! If you have any issues or are unsure about any anything please check our Contributors' Guide
Here are some useful points:

• Pay attention to the quality of your code (ruff, mypy and type annotations). Our prek-hooks will help you with that.
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[bbovenzi]

Let's please give this some manual testing to make sure we are importing everything correctly.

• what does it look like when the Monaco Editor is loading?
• does error highlighting show up when adding invalid json to the trigger dag -> advanced form?
• Does python code in the dag code tab render correctly?

[szzhoujiarui]

Verified the follow-up in commit 408cbd8 on WSL2:

• Registered the public Monaco feature entry points for code actions, code lenses, drop/paste, inlay hints, and suggestions.
• Confirmed the JSON editor loads and remains interactive (find and folding work).
• Confirmed invalid JSON ({"enabled": tru}) shows a red diagnostic, displays the validation error, and disables the Trigger button.
• Confirmed the DAG Code page correctly highlights a Python triple-quoted f-string and its {name} interpolation.
• Confirmed the browser console shows none of the five previous Unknown service errors (ICodeLensCache, IInlayHintsCache, treeViewsDndService, ISuggestMemories, actionWidgetService).
• Monaco Python f-string tests pass: 12/12.
• Three adjacent UI test files pass: 33/33.
• pnpm lint, the production build, and git diff --check pass.

The full UI suite consistently reaches 103-104 passing test files before a Vitest worker exits with a Node 22/libuv uv__stream_destroy assertion while unmocked MSW requests to 127.0.0.1:3000 fail with ECONNREFUSED. The targeted tests, adjacent tests, lint, build, and browser verification all pass.

[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.