Playlist play button state out of sync

[StephenHeaps]

Description:

Play button can become out of sync with video play/pause state if tapped before queuing up a video

Steps to Reproduce

Flow 1:

1. Open playlist with autoplay disabled (Three Dot Menu -> Settings -> Playlist -> Auto-Play) and at least 1 video downloaded
2. Tap play button in video player
3. Tap downloaded video in list below
4. Observe play button showing when video is playing (should be pause button)

Flow 2:

1. Play a video in Brave Playlist
2. Switch to music app
3. Play a song
4. Video pauses, but if you open Brave again it shows pause button (video paused, should show play).

Actual result:

https://user-images.githubusercontent.com/5314553/202802248-c507327d-59b1-41c9-a788-4d1603cce393.mov

Expected result:

Pause button shows when video is playing

Reproduces how often: [Easily reproduced, Intermittent Issue]

Brave Version:

Device details:

Website problems only:

• did you check with Brave Shields down?
• did you check in Safari/Firefox (WkWebView-based browsers)?

Additional Information

[StephenHeaps]

Updated above with a second flow to reproduce button out of sync issue.