Fix ZHA binding api to actually return responses

[jasonkuster]

Proposed change

Fixes #94379 by having bind methods return an empty response upon completion (rather than just dropping). Could be enhanced in the future by returning whether the request succeeded or failed, but that's out of scope for this 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)
• 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 ZHA Device / Group bind hangs indefinitely in UI (even on success) #94379

Checklist

• The code change is tested and works locally.
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• Tests have been added to verify that the new code works.

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[home-assistant]

Hi @jasonkuster

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Thanks!

[home-assistant]

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

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