Update single playlst view for user playlist to have pagination

[PikachuEXE]

Pull Request Type

• Bugfix
• Feature Implementation
• Documentation
• Other

Related issue

Maybe this makes #4578 better

Description

Add pagination to single playlist view for user playlists

Screenshots

Testing

• Add some playlists with 100+ videos (e.g. copy some playlists from https://www.youtube.com/channel/UCXuqSBlHAE6Xw-yeJA0Tunw, sort by Last Video Added)
• Ensure single playlist view got videos paginated
• Ensure pagination limit NOT remembered
• Ensure user playlist can be copied without warning even not all videos loaded
• Ensure this issue is fixed: When moving a video in a playlist up or down, the animation for the videos swapping plays twice
• What else

Desktop

• OS:
• OS Version:
• FreeTube version:

Additional context

[kommunarr]

Bug that I discovered while testing this (not sure if novel): When moving a video in a playlist up or down, the animation for the videos swapping plays twice.

[kommunarr]

bug (blocking): My playlist with 4000 videos became 200 videos during testing of this. Edit: It just happened again after hard restarting the app, truncating the playlist to 100 videos. Those saved videos are gone for good. Seems to be unique to this PR.

issue (non-blocking): This makes copying user playlists as irksome as copying remote playlists now.

[kommunarr]

bug: it stopped paginating for me after 300 videos.

bug: it also stopped paginating for other playlists too. Even when switching to a different tab (like Subscriptions) and back. Even after Ctrl + R... I had to restart the app.

[PikachuEXE]

My playlist with 4000 videos became 200 videos during testing of this. Edit: It just happened again after hard restarting the app, truncating the playlist to 100 videos. Those saved videos are gone for good. Seems to be unique to this PR.

Fixed

it also stopped paginating for other playlists too. Even when switching to a different tab (like Subscriptions) and back. Even after Ctrl + R... I had to restart the app.

Coz I didn't push 2nd commit before I submit PR, please re-test

[PikachuEXE]

This makes copying user playlists as irksome as copying remote playlists now.

Fixed

[PikachuEXE]

When moving a video in a playlist up or down, the animation for the videos swapping plays twice.

Caused by #4518 but I don't know how yet...

[PikachuEXE]

When moving a video in a playlist up or down, the animation for the videos swapping plays twice.

Fixed

[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[PikachuEXE]

Not needed anymore