Add a MXDataHandler method to detect if the room fields are initialized.
Add a MXDataHandler method to detect if the room fields are initialized.

It adds a log to help us to investigate why it could be triggered (reported by GA).

vt0r/vector-android,vector-im/vector-android,vector-im/riot-android,noepitome/neon-android,floviolleau/vector-android,floviolleau/vector-android,vector-im/riot-android,floviolleau/vector-android,riot-spanish/riot-android,vector-im/riot-android,noepitome/neon-android,riot-spanish/riot-android,riot-spanish/riot-android,noepitome/neon-android,vt0r/vector-android,noepitome/neon-android,vector-im/riot-android,vector-im/vector-android,riot-spanish/riot-android,vector-im/vector-android,vector-im/riot-android,vt0r/vector-android,vector-im/vector-android