Banners include extra whitespace/newline

[janbrasna]

Describe the bug
W10 or special event banners seem badly indented — the box is taller than the content and the content is not centered, see #2822 (comment)

Preconditions
This only seems to be present in prod. The banners on stage are the expected height (and also contain appropriately less paragraph elements).

Steps to reproduce

1. Try summoning e.g. the W10 EOS banner, no steps, it's random for me.
2. Check its element contents. Extra empty paragraphs. Causing the unbalanced render.

Expected behavior

stage:

Actual behavior

prod:

Additional context

I'm not sure if this is deliberate editorial choice? Or it gets there when iterating over the banner content when emitting it? It would be easier if the empty paragraphs weren't there, but it can eventually also get circumvented if the paragraphs were using different display styling, see the devtools attempts below:

Screenshots/Screencasts

Screen.Recording.2026-05-09.at.11.18.45.mov