[FIX] ODataModel: Fix event parameters for annotation and metadata

Due to wrong forwarding of events, the event object was passed as the
parameters object.

Fixes https://github.com/SAP/openui5/issues/224

BCP: 1482019711
Change-Id: I28b7a9de57a23eef4a3d29e320dbe70eaae6ccad
CR-Id: 012003146900009423452014
Merge "[FIX] ODataModel: Fix event parameters for annotation and metadata" into rel-1.26