fix(fuselage-forms): unsubscribe detached label actions

[YashAnand69]

Proposed changes (including videos or screenshots)

Unsubscribe wrapped-input label actions when the input ref detaches.

FieldProvider already returns an unsubscribe function, but the context type hides that return value and useFieldWrappedByInputLabel discards it. Return it to useSafeRefCallback so StrictMode ref replay does not register duplicate clicks and replacing an input releases the detached node.

Issue(s)

Closes #2261

Further comments

• Before the fix: clicking a checkbox label in StrictMode toggles twice; replacing an input leaves its old click handler active. Both DOM regressions fail.
• Full forms suite passes: 3 suites, 44 tests, 14 snapshots. Package lint, TypeScript, formatting and diff checks pass.
• Context onAction now explicitly returns its existing unsubscribe function; the default context supplies a no-op cleanup. Custom providers will need to follow this return contract.
• Patch changeset included. No visual styles/markup changed; no visual regression run.

AI assistance: implemented and tested with OpenAI Codex.

[changeset-bot]

🦋 Changeset detected

Latest commit: 8ea2795

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@rocket.chat/fuselage-forms	Patch

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