Enforce zen rule limit on a package level.

This means that a single package with multiple different condition providers or configuration activities will correctly have all of their zen rules associated with the same package rather than each owner/activity having their rules counted separately.

Bug: 235823407
Test: ZenModeHelperTest
Change-Id: I35daf9a24f546ae25a78a2d841be39072cdc5641
Merged-In: I35daf9a24f546ae25a78a2d841be39072cdc5641
(cherry picked from commit f4e69394)