Reset view index in ItemInput clear method for consistent state #284

Job	Run time
provide-examples	3s
run-ci (examples/Basic/Basic.ino)	1m 37s
run-ci (examples/Callbacks/Callbacks.ino)	1m 19s
run-ci (examples/CharsetInput/CharsetInput.ino)	1m 41s
run-ci (examples/IntFloatValues/IntFloatValues.ino)	1m 42s
run-ci (examples/ItemBack/ItemBack.ino)	1m 32s
run-ci (examples/List/List.ino)	1m 39s
run-ci (examples/MenuTimeout/MenuTimeout.ino)	1m 27s
run-ci (examples/SubMenu/SubMenu.ino)	1m 28s
run-ci (examples/ViewShifting/ViewShifting.ino)	1m 53s
run-ci (examples/Widgets/Widgets.ino)	2m 46s
	17m 7s

Provide feedback