[FIX] m.MultiComboBox: Selection by checkbox did not work.

Selection of the list items with checkbox did not work with first
click/tap of the checkbox.

BCP: 1472014366
Change-Id: I7575f20aad01365c534b01230891236782415e31
(cherry picked from commit bcbec1d49759df76540aefa23ce98bfa57b6912e)
CR-Id: 012006153200015617442014
Merge "[FIX] m.MultiComboBox: Selection by checkbox did not work." into rel-1.26