[INTERNAL][FIX] sap.m.Select: Correct handling of focus
[INTERNAL][FIX] sap.m.Select: Correct handling of focus

Problem:
Focus is not applied on mousedown event.

BCP: 2070452193
Change-Id: I7668ffb29674abee6b387a65739da79a728dd192

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