Revert "Update Glanceable Hub's AppWidgetHostListener impl for widget events"

This reverts commit f14f9cba.

Reason for revert: DroidMonitor: Potential culprit for http://b/415117747 - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Bug: 415117747

Change-Id: I19bd0a563985cd107f43cf1564473a96872e8387