fix: lint and format generated files using stricter config

[charlesfries]

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• I have followed every step in the contributing guide (updated 2022-10-06).
• The PR title follows the convention we established conventional-commit
• I performed a functional test on my final commit

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Changelog

Switching to typescript-eslint strictTypeChecked config in a generated app reveals a handful of simple lint errors. This PR fixes those issues. Additionally, the generated Prettier write script omits CSS files, and the generated CSS is missing a single newline, which is also fixed in this PR.

• Remove unnecessary template literal usage (@typescript-eslint/no-unnecessary-template-expression)
• Cast numbers to strings in console.log (@typescript-eslint/restrict-template-expressions)
• Format globals.css using Prettier

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Project	Deployment	Review	Updated (UTC)
create-t3-app	Ready	Preview, Comment	Dec 27, 2025 9:21pm