Update brands URLs to use fallback search parameter

[steverep]

Proposed change

Needs home-assistant/brands#4708. Changes from /_/... to ...?fallback=true.

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: Placeholder redirects and CORS don't mix brands#4707
• 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
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Black (black --fast 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.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• Untested files have been added to .coveragerc.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[frenck]

Closing PR as the parent PR referenced has been closed as well.

../Frenck

[steverep]

Closing PR as the parent PR referenced has been closed as well.

As noted in the parent, it was replaced by home-assistant/brands#4722, which is still awaiting a review. If that is merged, I would intent to follow up with a switch to a search parameter, so this PR would still be relevant.

[frenck]

Sorry missed that one @steverep! Re-opened the PR.

../Frenck

[frenck]

@steverep Is this PR now ready for a follow-up? Or can we close it for now?

../Frenck