zen_mode_sound_summary_off should only be used when describing the
number of schedules that are enabled (and requires a numeric parameter).
Instead, use the string "off" when a sound isn't enabled by a custom dnd
setting.
Fixes: 189120026
Test: manual
Change-Id: I8bc180353a61455b124801d14f0d319f49bb341c
The notification package was getting too big.
Test: make -j64 RunSettingsRoboTests
Fixes: 145224451
Change-Id: I25ba82f42f7a137d8adcce72dcf8089d0e018bdc