Don't push bubbles from distracting apps in focus mode

This change verifies that bubble entries are not suspended before pushing them to the user.

Flag: NA
Fixes: 290617203
Test: atest NotificationInterruptStateProviderImplTest
Test: Manual
      - Add the test Bubbles app, or any other app, to the list of distracting apps in focus mode settings
      - Turn on focus mode and generate a notification with the distracting app.
         - If you're using the test app, you'll have to use a foldable or a tablet
         - Open Settings and the test app in split screen
         - Tap on a chat and send a message -- this will generate a notification with a delay
         - Turn on focus mode immediately after sending the message
      - Observe that the bubble is not pushed to the user
      - Turn off focus mode
      - Observe that the bubble gets pushed
Change-Id: Ia0476556f1fc6aabddd4d8a9eac18f94fcfb6a52