Streamline case of source strings

# Different case for words within strings

> New **r**ecord

vs

>Show **C**olumns

For example: list module: table buttons
<img width="818" alt="image" src="https://user-images.githubusercontent.com/2861556/218048280-ef5addc4-6726-4383-bb4c-4a96b217d7ac.png">

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- [ ] https://review.typo3.org/c/Packages/TYPO3.CMS/+/77876
