fix(mobile): not being able to zoom into live photos

[mertalev]

Description

This PR moves the handling for toggling the live photo from the native player to the gallery viewer.

This is unfortunately much less efficient:

1. It only starts loading the video when the toggle button is clicked instead of preloading it
2. Each toggle re-renders the image
3. Each toggle to the motion part re-initializes the player and video

As such, this change adds a delay to the toggling and increases resource usage, and is hence intended to be a hot-fix pending a better solution.

Fixes #14553

How Has This Been Tested?

Tested with a release build on iOS, confirming that pinching and panning work.