Docs: reserve space for applies-block before hydration

[reakaleek]

What

• Add a minimum height to block-level applies badges so the row keeps its space before the web component loads
• Prevent content below the page title from jumping when applies badges appear

Why

• Empty <applies-to-popover> elements render no visible badge until JavaScript loads
• The first applies block on pages like /docs/get-started/the-stack caused a layout shift of about 30px

Notes

• Uses the same reserved-space pattern as the global nav wrapper in assembler.css
• Applies to all block-level applies emitters through the shared .applies.applies-block class

Made with Cursor

[Mpdreamz]

layout shifts are nasty, thank you!