Fix extensions automatically enabling on download (#12239)

The extension reload signal was being triggered automatically in the end of the installation process, but this only should apply if the extension was already enabled before (maybe after an update)

files/usr/share/cinnamon/cinnamon-settings/bin/Spices.py

@@ -773,10 +773,11 @@ def install_from_folder(self, folder, uuid, from_spices=False):
 
     def _install_finished(self, job):
         uuid = job['uuid']
-        if self.get_enabled(uuid) and self._proxy:
-            self._proxy.ReloadXlet('(ss)', uuid, self.collection_type.upper())
-        else:
-            self.send_proxy_signal('ReloadXlet', '(ss)', uuid, self.collection_type.upper())
+        if self.get_enabled(uuid):
+            if self._proxy:
+                self._proxy.ReloadXlet('(ss)', uuid, self.collection_type.upper())
+            else:
+                self.send_proxy_signal('ReloadXlet', '(ss)', uuid, self.collection_type.upper())
 
     def uninstall(self, uuid):
         """ uninstalls and removes the given extension"""