Screenshot testing wrong variable name for multi theme

[JackEblan]

Thanks for submitting a pull request. Please include the following information.

What I have done and why

Include a summary of what your pull request contains, and why you have made these changes.

Fixes #<issue_number_goes_here>

How I'm testing it

Choose at least one:

• Unit tests
• UI tests
• Screenshot tests
• N/A (provide justification)

Do tests pass?

• Run local tests on DemoDebug variant: ./gradlew testDemoDebug
• Check formatting: ./gradlew --init-script gradle/init.gradle.kts spotlessApply

[github-actions]

Combined test coverage report

Overall Project	71.32%	🍏

There is no coverage information present for the Files changed

[github-actions]

Combined test coverage report

Overall Project	71.32%	🍏

There is no coverage information present for the Files changed