Active Directory: `userInfoById` returns undefined for backend if LDAP group request times out

### Affected Stackable version

24.11.1

### Affected OpenPolicyAgent version

_No response_

### Current and expected behavior

We should return an actual error message instead.

### Possible solution

_No response_

### Additional context

https://stackable.atlassian.net/browse/SUP-171

### Environment

_No response_

### Would you like to work on fixing this bug?

None