Change ending time does not create override rule

[gigem]

Create a channel (or other recurring type) rule.

While program is recording, choose "Change Ending Time" from view scheduled screen.

The normal rule type is presented in the rule editor instead of a kOverride rule.

The core problem is the override rule created in ScheduleCommon::customEvent() is ignored when ScheduleCommon::EditScheduled?() is called.

[gigem]

(In [22262]) Fixed the "Change Ending Time" action so the correct override rule gets presented for editing when needed. Fixes #7240.