Switch jumping and jumping back to a stack-based approach

### Your use case

A copy of https://github.com/vector-im/element-meta/issues/1572, Telegram currently has this approach, it'd be very helpful in a dense conversation to go "back" to the message you jumped from.

### Have you considered any alternatives?

_No response_

### Additional context

_No response_

The issue names no files, tests, or entry points. Start by reviewing the linked Element Meta issue and locating the current message-jumping navigation in the iOS app. Done means dense-conversation jumps use a stack so users can return to the message they jumped from.

Written by the indexing model from the issue text.