Catch garmin_connect keyerrors with unknown entity type updates

[cyberjunky]

Catch KeyErrors when trying to update entities for which no value was found online.
Set Respiration type entities to entity_registry_enabled_default = False

Breaking change

Proposed change

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

Additional information

• This PR fixes or closes issue: fixes Garmin Connect: Error on device update! #31600
• This PR is related to issue:
• Link to documentation pull request: timer: timer.start doesn't restart the timer if already running #12013

Checklist

• The code change is tested and works locally.
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• [] Documentation added/updated for www.home-assistant.io

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• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
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