Dismiss the suspend dialog if conditions have been modified.

Whenever suspension conditions change, if there is a user-visible
suspension-related dialog, dismiss it to ensure the user is never
looking at stale information.

Bug: 169137795
Test: atest SuspendPackagesBroadcastTest#sendPackagesSuspendModifiedForUser
Test: manual (steps below)
-enable EBS, tap on suspended app to see dialog
-enable Focus mode, ensure dialog is dismissed
-tap on suspended app again to see relevent dialog,
 disable Focus mode, ensure dialog is dismissed
-tap on suspended app again to see relevant dialog,
 disable EBS, ensure dialog is dismissed correctly
-can permute enable/disable steps to further verify

Change-Id: Ib1650f910f7441498424ab4bc92185ce432ac405
(cherry picked from commit 25e73a8b)