fix: Fix types

Author: calvin-codecov

graphql_api/types/user/user.py

@@ -48,7 +48,7 @@ def resolve_student_updated_at(
 
 # this will no longer be updated from the UI
 @user_bindable.field("customerIntent")
-def resolve_customer_intent(user: Owner, info: GraphQLResolveInfo) -> str:
+def resolve_customer_intent(user: Owner, info: GraphQLResolveInfo) -> Optional[str]:
     owner = user
     if not owner.user:
         return None