frontend: Added 'Failed adding to Steam Library dialog' in program_row.py' dialog (#3730)

frontend: Added 'Failed adding to Steam Library dialog' in program_row.py

Author: mhd12e

bottles/frontend/program_row.py

@@ -339,6 +339,10 @@ def update(result, _error=False):
                 self.window.show_toast(
                     _('"{0}" added to your Steam library').format(self.program["name"])
                 )
+            else:
+                self.window.show_toast(
+                    _('"{0}" failed adding to your Steam library').format(self.program["name"])
+                )
 
         steam_manager = SteamManager(self.config)
         RunAsync(