test: search for proper snackbar on user create error

packages/web/src/locales/en.json

@@ -223,6 +223,7 @@
   "createUser.submit": "Create",
   "createUser.successfullyCreated": "The user has been created.",
   "createUser.invitationEmailInfo": "Invitation email will be sent if SMTP credentials are valid. Otherwise, you can share the invitation link manually: <link></link>",
+  "createUser.error": "Error while creating the user",
   "editUserPage.title": "Edit user",
   "editUser.status": "Status",
   "editUser.submit": "Update",

packages/web/src/pages/CreateUser/index.jsx

@@ -51,6 +51,14 @@ export default function CreateUser() {
         },
       });
     } catch (error) {
+      enqueueSnackbar(formatMessage('createUser.error'), {
+        variant: 'error',
+        persist: true,
+        SnackbarProps: {
+          'data-test': 'snackbar-error',
+        },
+      });
+
       throw new Error('Failed while creating!');
     }
   };