Ensure new grid card options don't break editor

[spacegaier]

Breaking change

Proposed change

Ensure that specifying square or columns does not break the editor.

Note: This PR does not offer a way to specify those values in the editor themselves, since the grid/stack itself has no real editor element yet. That will need to be covered in a future PR.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

Additional information

• This PR fixes or closes issue: fixes Grid editor: add support for columns/square #7729
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• 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