Polish click timeout setting

Update delay before click time options and put it in a dialog.

screenshot: go/screenshot-aw7momh848qghqj

No-Typo-Check: pre-existing typo, will fix it in a separate cl.
Bug: 390460859
Test: atest ToggleAutoclickDelayBeforeClickControllerTest
Flag: com.android.server.accessibility.enable_autoclick_indicator
Change-Id: Id0574bd4f1c272a6aa56f9b947d734ecd804bf46