Add addtional logging for long press event handling in the lock screen

Current hypothesis is that long press on the device entry icon is getting rejected because of touch slop being more than 8px.
This CL also parameterizes allowedTouchSlop in LongPressHandlingView to allow changing it just for DeviceEntryIcon and not for other use cases.

Bug: 358424256
Flag: EXEMPT bugfix logging changes
Test: everything builds, logs are present in logbuffer.
Change-Id: I9a6fccf9892b3d69bc436659186fcad0b466b1a3