* Implement `async_register_firmware_info_provider` for OTBR
* Keep track of the current device for OTBR
Keep track of the current device, part 2
* Fix unit tests
* Revert keeping track of the current device
* Fix existing unit tests
* Increase test coverage
* Remove unused code from tests
* Reload OTBR when the addon reloads
* Only reload if the current entry is running
* Runtime test
* Add a unit test for the reloading
* Clarify the purpose of `ConfigEntryState.SETUP_IN_PROGRESS`
* Simplify typing
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