Fix errors when unjoining multiple Sonos devices simultaneously

[jjlawren]

Proposed change

This wraps the media_player.join and .unjoin service calls in an async lock to avoid potential races during grouping operations.

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

Additional information

• This PR fixes or closes issue: fixes media_player.unjoin throws error when unjoining the "master" #73000
• This PR is related to issue:
• Link to documentation pull request:

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[probot-home-assistant]

Hey there @cgtobi, mind taking a look at this pull request as it has been labeled with an integration (sonos) you are listed as a code owner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[balloob]

you write lock in description but use a condition here

[jjlawren]

I was trying to keep the description simple as the way it's used here should effectively act like a simple lock. Am I missing an angle on why it shouldn't be used in this manner?

[balloob]

was just checking!