fix(issues): Anchor issue preview hovercard to the visible title (#121919)

Long issue titles get truncated, but the hovercard anchored to the
title's *full* untruncated width — so the card landed ~226px past where
the text visually ends, looking detached from its row.

The trigger is now `inline-block` with the truncation moved onto it, so
it reports the width you can actually see. Plain `inline-block` would
have undone #79570, which used `inline` to get the ellipsis working.

### Before
<img width="2020" height="240" alt="image"
src="https://github.com/user-attachments/assets/01303e78-5c83-4a28-82cc-cb1a08cad9b8"
/>

### After

Affects the issue stream, trace drawer, feedback crash reports, similar
issues, and detector open periods. Bookmarked issues are still off by
the star's width (~17px).

---------

Co-authored-by: Nate Moore <natemoo-re@users.noreply.github.com>