TODO(sll) in core/templates/pages/exploration-editor-page/modal-templates/exploration-metadata-modal.component.ts: Get rid of the $timeout.

[FaithAbiola]

The timeout is currently used because there is a race condition: the saveDisplayedValue() calls above result in autosave calls. These race with the discardDraft() call that will be called when the draft changes entered here are properly saved to the backend.

Refactor the code to remove the need for the $timeout and address the race condition issue.

[seanlip]

Closing as duplicate of #20338.