Report unserializable data in websocket

[balloob]

Breaking change

Proposed change

Make the websocket API call out the bad state that is breaking the get_states command.

Also updated the find data we can't serialize to JSON to call out the entity if it encounters a state.

This will help with better finding the causes for #33952 and #33929

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

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# Example configuration.yaml

Additional information

• This PR fixes or closes issue: fixes #
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• The code change is tested and works locally.
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[probot-home-assistant]

Hey there @home-assistant/core, mind taking a look at this pull request as its been labeled with a integration (websocket_api) you are listed as a codeowner for? Thanks!

[MartinHjelmare]

Looks good!