Fix theme on sensor card

[ludeeus]

Proposed change

Moves graph/line check so themes are always applied.

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

type: sensor
entity: sensor.date
theme: someThemeName

Additional information

• This PR fixes or closes issue: fixes Theme not applied to Sensor Card #4700
• This PR is related to issue: N/A
• Link to documentation pull request: N/A

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