[TIMOB-15283] Managed Windows will be focused by their managers
[TIMOB-15283] Call delegate method after popover call
[TIMOB-15283] Properly focus/blur managed windows in Split Window
Merge pull request #4741 from vishalduggal/timob-15283-31X

[TIMOB-15283] (3_1_X) iOS: SplitWindow does not respond to focus events