[INTERNAL] sap.ui.dt: FIX_1670388647
[INTERNAL] sap.ui.dt: FIX_1670388647

When the source and target are the same, then commandstack should not be
modified with a move activity and the undo should be disabled.

Change-Id: I93acc6fab01166699c4b7630bf014f114b35cd67

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