discard all unpublished changes without requiring live sync

It would be incredibly useful to be able to discard all unpublished changes without having to enable live sync.

Use Case: We are making changes to a page in staging, so we cannot enable live sync, since that would erase our published changes. And we cannot push to prod, since the page is not ready.

The undo button does not clearly show what changes are being reverted, and the history is only sometimes available and is cluttered with many, many autosaves that don't necessarily indicate any meaningful change. We need a way to simply revert our local changes back to the current, published state of the piece of content in that specific environment.