Fix wired charging ripple not showing up in multi-user mode.

Changed the Window type to TYPE_KEYGUARD_DIALOG to make the ripple show
up in non-owner user mode. Per android official doc, TYPE_SYSTEM_OVERLAY does not support multiuser -- "In multiuser systems shows only on the owning user's window." It's also deprecated.

This matches with the WirelssCharingAnimation Window type.

Please find the recording in the bug.

Bug: 266112677
Test: Manual & `adb shell cmd statusbar charging-ripple`
Change-Id: Ibc73d27d9c7272a4ae5dc4da4e894c020addd1e1