QmlProfiler: Don't switch to designer when clicking on events

We want to only navigate the text editor when browsing through profile
data.

Change-Id: I2156b9853a6a1547a52c491ea021a68ca4f6dde9
Task-number: QTCREATORBUG-13433
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>