GlobalActionsDialogLite: set accurate window title

The previous window title, "ActionsDialog", is misleading, as it
suggests that the window is being created by
core/java/com/android/internal/globalactions/ActionsDialog.java, which
appears to be an older implementation of the same feature. This caused
me to spend quite some time trying to work out why my code changes
weren't doing anything. Instead, name it after the class that creates
it.

Bug: 245989146
Test: open the actions dialog (e.g. by pressing Power+Volume Up), and
      check the updated name appears in `dumpsys input`
Test: check that TalkBack descriptions of the dialog are unaffected
Flag: EXEMPT log only update
Change-Id: Ie00618d7827ea8e965221897cbd5a7b4f5416673