QmlProfiler: Accept unknown input events

We might get more event types in the future and filtering them is harder
than just displaying them. Also, traces might contain invalid input
events which would trigger the assert.

Change-Id: I9b38422af953ebb65363fc2b7a91facb7f757976
Reviewed-by: Milian Wolff <milian.wolff@kdab.com>

src/plugins/qmlprofiler/inputeventsmodel.cpp

@@ -126,7 +126,7 @@ QVariantMap InputEventsModel::details(int index) const
         type = tr("Mouse Event");
         break;
     default:
-        Q_UNREACHABLE();
+        type = tr("Unknown");
         break;
     }