Add ability to translate ENUM sensor states in Unifi integration

[bieniu]

Breaking change

The states of Device State sensors have been standardized to match Home Assistant core rules and be translatable.
This affects the following Unifi sensor states:

• Connected, which now became connected
• Pending, which now became pending
• Firmware Mismatch, which now became firmware_mismatch
• Upgrading, which now became upgrading
• Provisioning, which now became provisioning
• Heartbeat Missed, which now became heartbeat_missed
• Adopting, which now became adopting
• Deleting, which now became deleting
• Inform Error, which now became inform_error
• Adoption Failed, which now became adoption_failed
• Isolated, which now became isolated
• Unknown, which now became unknown

If you used those states directly in your automations, scripts, or templates; you will need to adjust those to match these changes.

Proposed change

Adds ability to translate ENUM sensor states in Unifi integration.

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)
• Deprecation (breaking change to happen in the future)
• 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 #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
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• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• 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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[home-assistant]

Hey there @Kane610, mind taking a look at this pull request as it has been labeled with an integration (unifi) you are listed as a code owner for? Thanks!

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[davidrapan]

Couldn't some states have references to already existing translations?

[joostlek]

Suggested change

	"disconnected": "Disconnected",
	"connected": "Connected",
	"disconnected": "[%key:common::state::disconnected%]",
	"connected": "[%key:common::state::connected%]",

[bieniu]

Good point, forgot about that.

[joostlek]

unknown should not be its own state. Rather, the entity should return None in that case (which for the end user would still resolve to unknown, but the difference is, is that unknown already is a valid state and shown in the automation editor)

[joostlek]

Use sentence case

[joostlek]

Suggested change

	"disconnected": "Disconnected",
	"connected": "Connected",
	"disconnected": "[%key:common::state::disconnected%]",
	"connected": "[%key:common::state::connected%]",

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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