Remove 'show all controls' option for Plex

[jjlawren]

Breaking change

Deprecates a YAML & options config option and removes its associated functionality. Breaking config removal scheduled for the 0.110 release.

Proposed change

The ‘show all controls’ option has historically caused confusion as enabling it makes it appear that uncontrollable Plex clients are controllable. Additionally, client-specific workarounds regularly cause confusion and incorrect behavior. For example, NVIDIA SHIELD clients always appear controllable. Any client-specific workarounds should be pushed down into the underlying library’s domain.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example entry for configuration.yaml:

# Example configuration.yaml
plex:
  media_player:
    show_all_controls: True  # Deprecated

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Remove option and update media player compatibility for Plex home-assistant.io#12269

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

The integration reached or maintains the following Integration Quality Scale:

• No score or internal
• 🥈 Silver
• 🥇 Gold
• 🏆 Platinum

[codecov]

Codecov Report

Merging #32391 into dev will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev   #32391      +/-   ##
==========================================
- Coverage   94.75%   94.75%   -0.01%     
==========================================
  Files         776      776              
  Lines       56174    56173       -1     
==========================================
- Hits        53227    53226       -1     
  Misses       2947     2947

Impacted Files	Coverage Δ
homeassistant/components/plex/config_flow.py	100% <ø> (ø)	⬆️

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