Include site URL in remove-role success message when no role given

Co-authored-by: swissspidy <841956+swissspidy@users.noreply.github.com>

Author: Copilot

features/user.feature

@@ -352,9 +352,9 @@ Feature: Manage WordPress users
       | roles | author |
 
     When I run `wp user remove-role 1`
-    Then STDOUT should be:
+    Then STDOUT should contain:
       """
-      Success: Removed all roles from admin (1).
+      Success: Removed all roles from admin (1) on
       """
 
     When I run `wp user get 1`

src/User_Command.php

@@ -819,7 +819,7 @@ public function add_role( $args, $assoc_args ) {
 	 *     Success: Removed 'author', 'editor' roles for johndoe (12).
 	 *
 	 *     $ wp user remove-role 12
-	 *     Success: Removed all roles from johndoe (12).
+	 *     Success: Removed all roles from johndoe (12) on http://example.com.
 	 *
 	 * @subcommand remove-role
 	 */
@@ -848,7 +848,7 @@ public function remove_role( $args, $assoc_args ) {
 				$user->remove_all_caps();
 			}
 
-			WP_CLI::success( "Removed all roles from {$user->user_login} ({$user->ID})." );
+			WP_CLI::success( "Removed all roles from {$user->user_login} ({$user->ID}) on " . site_url() . '.' );
 		}
 	}