Dont require manifest for the overflow menu in integration card

[bramkragten]

Proposed change

If the integration is not loaded, we also don't have a manifest, not sure why we didn't show the menu when there was no manifest, @balloob ?

Fixes #9127

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 #
• 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

[balloob]

I assumed we would always have the manifest and used it to speed up loading the page.

btw, if there are domains that we don't have the manifest for, we should call HaConfigIntegrations._fetchManifest(domain)