Remove string exception for localize keys

[steverep]

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Proposed change

The goal here is just to remove ${string} from the list of exceptions so that some keys can actually start being type checked. Some associated errors are completely fixed while others are converted to literal types and caught by another exception for now.

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)
• [x] 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

• [x] The code change is tested and works locally.
• [x] There is no commented out code in this PR.
• [ ] Tests have been added to verify that the new code works.