Google Photos refactor OAuth exceptions

[erwindouna]

Breaking change

None.

Proposed change

Refactor Google Photos setup to handle OAuth token refresh failures using the OAuth-specific exceptions raised by the shared OAuth config entry helper.

This keeps reauth failures mapped to ConfigEntryAuthFailed and transient OAuth/client errors mapped to ConfigEntryNotReady, without inspecting raw aiohttp.ClientResponseError status codes in the 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 Google Photos: refactor to use new OAuth exceptions #175245
• This PR is related to issue:
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• Link to developer documentation pull request:
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[home-assistant]

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

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[Copilot]

Pull request overview

Refactors the Google Photos integration’s config entry setup to rely on the shared OAuth helper’s dedicated token refresh exception types, instead of inspecting aiohttp.ClientResponseError HTTP status codes directly.

Changes:

• Replace ClientResponseError status-splitting with OAuth2TokenRequestReauthError → ConfigEntryAuthFailed.
• Treat remaining OAuth token request failures (including transient) and aiohttp.ClientError as retryable via ConfigEntryNotReady.
• Remove the unused ClientResponseError import.