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. The badge shows two icons, and the description text is shown as its tooltip:

  • For slideMode = none , no badge is shown.
  • For slideMode = slide , a badge with the icons actions-search and actions-sort-amount-up is shown, but only if there are no content elements on the current page.
  • For slideMode = collect , a badge with the icons actions-cart and actions-sort-amount-down is shown.
  • For slideMode = collectReverse , a badge with the icons actions-cart and actions-sort-amount-up is shown.

No badge is shown on pages on the root level of the page tree.