Ensure saved passwords are effective immediately, not just following a restart when first saved. Fixes #1920

web/pgadmin/browser/server_groups/servers/__init__.py

@@ -746,6 +746,8 @@ class ServerNode(PGChildNodeView):
                         _=gettext
                     )
                 )
+            else:
+                password = conn_passwd or server.password
         else:
             password = data['password'] if 'password' in data else None
             save_password = \