Added dashed line as separator and label for common formats on format selector for import (#7432)

apps/web/src/locales/en/messages.json

@@ -7455,5 +7455,9 @@
   },
   "serviceAccountAccessUpdated": {
     "message": "Service account access updated"
+  },
+  "commonImportFormats": {
+    "message": "Common formats",
+    "description": "Label indicating the most common import formats"
   }
 }