Fix ART Service initialization order problems.

- Move ArtManagerLocal initialization before the boot compilation step
  (UpdatePackagesIfNeeded).
- Delay scheduling the background dexopt job because the job scheduler
  hasn't been started at that point.

Test: Boot with dalvik.vm.useartservice=true and check logcat that ART
  Service starts up and a first-boot dexopt runs without errors.
Bug: 266028904
Change-Id: I108b877f2a99c69c20f7209339cd193c2d41e7ea

services/java/com/android/server/SystemServer.java

@@ -1789,6 +1789,10 @@ public final class SystemServer implements Dumpable {
         }
         t.traceEnd();
 
+        t.traceBegin("ArtManagerLocal");
+        DexOptHelper.initializeArtManagerLocal(context, mPackageManagerService);
+        t.traceEnd();
+
         t.traceBegin("UpdatePackagesIfNeeded");
         try {
             Watchdog.getInstance().pauseWatchingCurrentThread("dexopt");
@@ -2737,10 +2741,6 @@ public final class SystemServer implements Dumpable {
         mSystemServiceManager.startService(PermissionPolicyService.class);
         t.traceEnd();
 
-        t.traceBegin("ArtManagerLocal");
-        DexOptHelper.initializeArtManagerLocal(context, mPackageManagerService);
-        t.traceEnd();
-
         t.traceBegin("MakePackageManagerServiceReady");
         mPackageManagerService.systemReady();
         t.traceEnd();