[FIX] sap.m.MultiInput: Prevent focus bubling when there's user input
[FIX] sap.m.MultiInput: Prevent focus bubling when there's user input

This fix make more complete and adds another scenario to the following
solution: Ifa302b1483410607de1213d50c7b7dc84aaaef42

BCP: 2170213855
Fixes: https://github.com/SAP/openui5/issues/3349
Change-Id: I6236380a35dc634c6b51ea02af835a6e0acf70d2

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