feat: add shared page empty tip (#2077)

Co-authored-by: himself65 <himself65@outlook.com>

packages/i18n/src/resources/en.json

@@ -114,6 +114,7 @@
   "Got it": "Got it",
   "emptyAllPages": "This workspace is empty. Create a new page to begin editing.",
   "emptyTrash": "Deleted pages will appear here.",
+  "emptySharedPages": "Shared pages will appear here.",
   "still designed": "(This page is still being designed.)",
   "My Workspaces": "My Workspaces",
   "Tips": "Tips: ",