Bug: Floating link editor gets blurred (as if out of focus) if switches positions without closing first

If the floating link editor switches positions, it becomes blurred. This can be fixed by not having subpixels in the translate value

Lexical version: 0.11.0

## Steps To Reproduce

1. Click a link to open the link editor
2. Click another link to have the editor switch positions
3. The link editor will look blurred

Link to code example:
Can be easily reproduced in the playground: https://playground.lexical.dev/
Click a link then another one without closing the editor.

This seems to be caused by having the translate value move the editor with subpixel values (ie 823.345px).
In the file `setFloatingElemPositionForLinkEditor.ts`, rounding the values seems to fix it.
Before:
```floatingElem.style.transform = `translate(${left}px, ${top}px)`;```

After:
```floatingElem.style.transform = `translate(${Math.round(left)}px, ${Math.round(top)}px)`;```

I can create a PR with this change.