Use fg broadcast for pkg suspension and quiet mode

When quiet mode is enabled or disabled via QS tile, launcher must
refresh whether the icons are grayed out. Conversely, QS tile must be
updated when quiet mode is toggled via Launcher. This depends on
a background broadcast and can be very unresponsive especially after a
reboot. This CL makes this broadcast into a foreground one so that the
UI is updated immediately.

When quiet mode is disabled, work packages get unsuspended, but launcher
won't update the icons until it receives ACTION_PACKAGES_UNSUSPENDED. To
make this resposive too that broadcast is also made foreground.

Strictly speaking there is no necessity to make
ACTION_PACKAGES_SUSPENSION_CHANGED into a foreground broadcast for these
issues but it is delivered to an activity which shows the suspension
dialog and is quite useless if delayed, so I made it foreground to keep
code simpler.

These broadcasts are only delivered to registered receivers and are not
of iterest to any apps except very few (Launcher, SysUI, DWB).

Bug: 271818888
Bug: 269595559
Test: manual, device_config put device_policy_manager enable_keep_profiles_running true
Change-Id: I9c1271020dff3775f78b2f0db305f4c3f7d2d068