Fix: simplify _load_user (#14154)

### What problem does this PR solve?

Simplify _load_user, remove unused fallback.

### Type of change

- [x] Refactoring

web/src/utils/authorization-util.ts

@@ -48,11 +48,6 @@ const storage = {
 };
 
 export const getAuthorization = () => {
-  const jwtAuth = getSearchValue('jwt_auth');
-  if (jwtAuth) {
-    return jwtAuth;
-  }
-
   const auth = getSearchValue('auth');
   const authorization = auth
     ? 'Bearer ' + auth