Hide controls in embedded videos on Android

[hitriyvalenok]

Have you read a contributing guide?

• [x] I have read CONTRIBUTING.md
• [x] I have searched the existing requests and didn't find any that were similar
• [x] I have considered creating a pull request instead and want to proceed

Clear and concise description of the problem

Video playback controls remain permanently visible in embedded videos on Android. They don't hide on tap or automatically after inactivity. This blocks part of the bottom content and creates a suboptimal viewing experience.

Suggested solution

1. Implement auto-hide functionality for video controls after a few seconds of inactivity
2. Hide/show controls by tap on video