Use new PackageMonitor#register() without externalStorage parameter

The externalStorage is not be used now, we are migrate to use new
method.

Bug: 29385425
Test: build and boot home
Change-Id: I38f566ba0281bce21c312d2f58cfe38eca10e036

services/core/java/com/android/server/am/ComponentAliasResolver.java

@@ -162,7 +162,7 @@ public class ComponentAliasResolver {
                     // avoid deadlocks.
                     if (enabled) {
                         mPackageMonitor.register(mAm.mContext, UserHandle.ALL,
-                                /* externalStorage= */ false, BackgroundThread.getHandler());
+                                BackgroundThread.getHandler());
                     } else {
                         mPackageMonitor.unregister();
                     }