Sticky filters on Embedded/Public dashboards

[flamber]

Is your feature request related to a problem? Please describe.
When creating larger dashboards with filters, then the user has to scroll up to set filters on Public or Embedded, because filters are not sticky.

Describe the solution you'd like
For consistency sake, have sticky filters, since normal in-app (and FullApp embedding) has used sticky since v41 (#11187).
Or at least provide sticky filters as an options.

Describe alternatives you've considered
Create smaller dashboards, but that's not always an option.

Additional context
It's important to be aware of mobile to prevent problems like #20879 and #23983