[INTERNAL][FIX] sap.m.Select: Fix width in IconOnly mode
[INTERNAL][FIX] sap.m.Select: Fix width in IconOnly mode

BCP: 1780141340

Change-Id: I8a3f70446c5023939b81724737ceb9998ae34061

SAP/openui5,SQCLabs/openui5,cschuff/openui5,SAP/openui5,SQCLabs/openui5,SQCLabs/openui5,nzamani/openui5,SAP/openui5,nzamani/openui5,nzamani/openui5,cschuff/openui5,SAP/openui5,cschuff/openui5