fix: Move setting avatar logic before checking for hook usage

[MissAllSunday]

Currently there is a check on Profie-View when trying to build u the text for the alert:

		// Did a mod already take care of this one?
		if (!empty($alerts[$id_alert]['text']))
			continue;

The check is assuming that someone using the integrate_fetch_alerts already build their own text key which is OK, however, the check also prevents setting the 'sender' key with the profile data from the sender_id already loaded previously.

This forces whoever uses the integrate_fetch_alerts hook to load their own sender_id profile data which means adding extra queries for data that is already available.

This PR simply moves the code for populating 'sender' key before the check to 'text'