Fix MR widget title vertical alignment when there is only one line

What does this MR do and why?

For the MR widgets on the MR details page (the page you're on right now), if there's only a title and no sub-title (only one line of text), the title is not vertically aligned with the icon next to it, and is a few pixels too high:

This MR fixes it by aligning it vertically with the icon to the left of it:

Describe in detail what your merge request does and why.

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How to set up and validate locally

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MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.

Related to #381781 (closed)