fix(oracle-api): #2253 return 403 when user is not authorized (#2280)

Author: MCatherine1994

frontend/src/App.tsx

@@ -101,7 +101,7 @@ const App: React.FC = () => {
   }, [signed, selectedClientRoles]);
 
   const handleRedirectTo403 = () => {
-    browserRouter.navigate('/403');
+    browserRouter.navigate(ROUTES.FOUR_OH_THREE);
   };
 
   return (

oracle-api/src/main/java/ca/bc/gov/oracleapi/interceptor/RoleAccessInterceptor.java

@@ -47,7 +47,7 @@ public boolean preHandle(
 
     boolean allowed = matchUserRoleWithResourceRoles(rolesRequired, userRoles);
     if (!allowed) {
-      response.setStatus(HttpStatus.UNAUTHORIZED.value());
+      response.setStatus(HttpStatus.FORBIDDEN.value());
     }
 
     return allowed;