DNM: cache test, manifest-only = warm hit

[bdraco]

Proposed change

DNM (do not merge). Empirical test for #171780.

Touches only homeassistant/components/cloud/manifest.json (no test or conftest change). The manifest change makes cloud a "core component" change, flipping CORE_ANY=true and triggering the full-suite path so Split tests for full run actually runs. Because no conftest or test file changed, the cache restored via restore-keys from the parent PR should be fully valid.

Expected behaviour in the Run split_tests.py step:

• Cache: NNNN hits / 0 misses / NNNN total
• Step finishes in roughly a second

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: Cache split_tests pytest --collect-only results between CI runs #171780

Checklist

• I understand the code I am submitting and can explain how it works.
• 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 Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

[home-assistant]

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

Code owner commands

Code owners of cloud can trigger bot actions by commenting:

• @home-assistant close Closes the pull request.
• @home-assistant mark-draft Mark the pull request as draft.
• @home-assistant ready-for-review Remove the draft status from the pull request.
• @home-assistant rename Awesome new title Renames the pull request.
• @home-assistant reopen Reopen the pull request.
• @home-assistant unassign cloud Removes the current integration label and assignees on the pull request, add the integration domain after the command.
• @home-assistant update-branch Update the pull request branch with the base branch.
• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component, problem in config, problem in device, feature-request) to the pull request.
• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component, problem in config, problem in device, feature-request) on the pull request.