BOOT_COMPLETED broadcasts are temp allowlisted to start FGS.

Broadcast receiver ACTION_BOOT_COMPLETED, ACTION_LOCKED_BOOT_COMPLETED and
ACTION_PRE_BOOT_COMPLETED are temp allowlisted to start FGS for a duration
 of 10000 milliseconds.

The temp allowlist duration can be changed by device_config command, for
example:
adb shell device_config put activity_manager boot_time_temp_allowlist_duration 10000

Bug: 175253292
Test: atest cts/tests/app/src/android/app/cts/ActivityManagerFgsBgStartTest.java
Change-Id: I0ff5b405b75a39a65ddb742382a970499ed6546b