Trying to paste in GtkTextView with emtpy clipboard logs a warning
If a user tries to paste some text (via ctrl+V or context menu paste) into a GtkTextView with empty clipboard, a warning is spit (example from text view in widget factory):
(gtk4-widget-factory:67715): Gtk-CRITICAL **: 08:08:37.091: gtk_text_buffer_insert: assertion 'text != NULL' failed