Fix Monaco JSON editor loading in UI

[shaealh]

Fixes #65954

Configures Monaco to use bundled editor and JSON workers instead of relying on the default loader path. This prevents JSON editors/viewers from getting stuck on Loading... in packaged Airflow UI views such as Connections and XComs.

Tests:

• corepack pnpm test src/utils/configureMonaco.test.ts
• corepack pnpm lint
• corepack pnpm build

[bbovenzi]

Ideally we shouldn't need type-casting like this. But if its necessary then please leave a comment explaining why

[bbovenzi]

We shouldn't be changing the uv.lock

[bbovenzi]

Let's also add a comment on why this is necessary

[potiuk]

@shaealh — There are 3 unresolved review thread(s) on this PR from @bbovenzi. Could you either push a fix or reply in each thread explaining why the feedback doesn't apply? Once you believe the feedback is addressed, mark the thread as resolved so the reviewer isn't re-pinged needlessly. Thanks!

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Note: This comment was drafted by an AI-assisted triage tool and may contain mistakes. Once you have addressed the points above, an Apache Airflow maintainer — a real person — will take the next look at your PR. We use this two-stage triage process so that our maintainers' limited time is spent where it matters most: the conversation with you.

[github-actions]

uv.lock on main just moved via #64943 ("Install airflowctl into airflow core"), commit 4510a0f and this PR currently conflicts.

Quickest fix:

git fetch upstream main && git rebase upstream/main
rm uv.lock && uv lock
git add uv.lock && git rebase --continue
git push --force-with-lease

Automated nudge — ignore if you're not ready to rebase. This comment is updated in place on future uv.lock bumps.

[bbovenzi]

Closing in favor of #66647