Fix crash when broadcasting preferred activity changed before boot completed.

By adding Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT.

Bug: 129269764
Test: presubmit
Change-Id: I2b57e2deee919ead768141f74508088a652d1415

services/core/java/com/android/server/pm/PackageManagerService.java

@@ -20013,6 +20013,7 @@ public class PackageManagerService extends IPackageManager.Stub
 
             final Intent intent = new Intent(Intent.ACTION_PREFERRED_ACTIVITY_CHANGED);
             intent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
+            intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
             try {
                 am.broadcastIntent(null, intent, null, null,
                         0, null, null, null, android.app.AppOpsManager.OP_NONE,