[INTERNAL] JSDoc: make shortcut analysis more robust
[INTERNAL] JSDoc: make shortcut analysis more robust

The code failed for MemberExpressions that could not be converted to a
qualified name (e.g. when using computed member access like in
Log["Level"]).

Change-Id: Ibe11c92fb7cb98e8003daaa5f4d647dc8fa06548

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5