Merge pull request #7086 from overleaf/ta-pdf-viewer-backdrop

Add Logo Backdrop in PDF Viewer

GitOrigin-RevId: 242a8c5a08abf5b90f8abdb144eb768a63fd1a0e

services/web/frontend/stylesheets/app/editor.less

@@ -93,6 +93,7 @@
   top: @editor-toolbar-height;
 }
 
+.pdf-viewer,
 .no-history-available,
 .no-file-selection,
 .multi-selection-ongoing {