Forward click and hover inputs to caption handle.

Simplifies input handling for statusBarInputLayer by having click/hover
listener call the equivalent event on captionHandle view directly. This
fixes an issue with hover events not being passed correctly.

This CL also fixes press events by adding that handling to
statusBarInputLayer's onTouchListener.

Bug: 341997116
Test: manual
Flag: com.android.window.flags.enable_additional_windows_above_status_bar
Change-Id: I83fd7d2c607781b69c7742cfd9aae6d1f58c4fe7