feat: rewrite collab server connecting (#4881)

Co-authored-by: dwelle <luzar.david@gmail.com>

src/locales/en.json

@@ -180,7 +180,8 @@
     "imageInsertError": "Couldn't insert image. Try again later...",
     "fileTooBig": "File is too big. Maximum allowed size is {{maxSize}}.",
     "svgImageInsertError": "Couldn't insert SVG image. The SVG markup looks invalid.",
-    "invalidSVGString": "Invalid SVG."
+    "invalidSVGString": "Invalid SVG.",
+    "cannotResolveCollabServer": "Couldn't connect to the collab server. Please reload the page and try again."
   },
   "toolBar": {
     "selection": "Selection",