Use the main event loop for homekit

[bdraco]

Waiting for ikalchev/HAP-python#270 .. now bumped to 2.9.2

May conflict with #37253

Proposed change

Use the main event loop for homekit. This change shaves off one thread per homekit bridge.

Update HAP-python to 2.9.2 which includes Paulus' changes and a bugfix for single byte reads

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

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• This PR fixes or closes issue: fixes #
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• The code change is tested and works locally.
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• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

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  Updated and included derived files by running: python3 -m script.hassfest.
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[bdraco]

Should be ready to go once upstream merge is done