View pressed state dispatching tweaks

Bugs 6075823, 6050563

Revise pressed state dispatch logic:

Only propagate pressed state to non-clickable views. This should
eliminate the "double glow" problem in some list items where a
clickable child button has a secondary glow along with a clickable
parent. This only applies to setPressed(true) calls; setPressed(false)
must propagate. Don't early-out in setPressed to support this use
case.

Change-Id: Ibbe2309f5030282fad8d23e4a9bc4616b3f5dc7c