Make DesktopModeUiEventLogger injectable

Provide the logger using @Provides in WMShellModule instead of @Inject,
and remove the InstanceIdSequence dependency since there is no provider
of that in the dagger graph and thus this logger wasn't able to be
injected as is.

Also makes a couple of styling changes to the logger class:
1) Removed hungarian notation
2) Moved event enum out of the companion object to avoid compilation
   warnings
3) Converted android.util.Log to Protologs

Bug: 341319606
Test: m WMShellUnitTests
Flag: EXEMPT refactor
Change-Id: Iefe177beada997878dce961fc50cea247709c3ea