Feature: #108842 - Add badge for slide mode in Layout module 

See forge#108842

Description 

This feature introduces a visual badge in the Content > Layout module to indicate when slide mode is active. The badge is a clear indicator for editors, enhancing the user experience by providing immediate feedback on the current mode of operation.

Each slide mode has a corresponding badge and description text:

  • For slideMode = none, no badge is shown.
  • For slideMode = slide, a badge with the text "Slide" is shown, but only if there are no content elements on the current page.
  • For slideMode = collect, a badge with the text "Collect" is shown.
  • For slideMode = collectReverse, a badge with the text "CollectReverse" is shown.