Prevent automatic replay after returning from background

[litetex]

See also #7195 (comment)

What is it?

• Bugfix (user facing)
• Feature (user facing)
• Codebase improvement (dev facing)
• Meta improvement to the project (dev facing)

Description of the changes in your PR

Successor to #7195

• If the video has completed, when the app returns from background, prevent the player from staring playback automatically

Analysis of the problem: #7195 (comment)

Steps to reproduce the bug:

1. Play a video
2. Lock the device while the video is still playing
3. Wait until the video ends
4. Unlock the device
5. The video starts playing again automatically

Before/After Screenshots/Screen Record

• Before:

newpipe_bug.mp4

• After:

newpipe_litetex_bug.mp4

APK testing

The APK can be found by going to the "Checks" tab below the title. On the left pane, click on "CI", scroll down to "artifacts" and click "app" to download the zip file which contains the debug APK of this PR.

Due diligence

• I read the contribution guidelines.