Use nativePostForkSystemServer for system server profiling

Need to use nativePostForkSystemServer instead of nativePostForkChild
since nativePostForkChild is called after the class loader is created.

(cherry-picked from commit 0712f2969c0f19fa2cc41f99751d39ee1852ebbc)
Bug: 139883463
Bug: 144383344
Test: showmap `pid system_server` and verify
Test: atest BootImageProfileTest

Merged-In: I7c4f61b08d286ef6056931231f6b835749092720
Change-Id: I7c4f61b08d286ef6056931231f6b835749092720
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index 3d4116b..135ee63 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -994,16 +994,13 @@
     }
   }
 
-  if (is_system_server) {
-    jit_options_->SetSaveProfilingInfo(profile_system_server);
-    if (profile_system_server) {
-      // Set the system server package name to "android".
-      // This is used to tell the difference between samples provided by system server
-      // and samples generated by other apps when processing boot image profiles.
-      SetProcessPackageName("android");
-      jit_options_->SetWaitForJitNotificationsToSaveProfile(false);
-      VLOG(profiler) << "Enabling system server profiles";
-    }
+  if (is_system_server && profile_system_server) {
+    // Set the system server package name to "android".
+    // This is used to tell the difference between samples provided by system server
+    // and samples generated by other apps when processing boot image profiles.
+    SetProcessPackageName("android");
+    jit_options_->SetWaitForJitNotificationsToSaveProfile(false);
+    VLOG(profiler) << "Enabling system server profiles";
   }
 
   // Create the thread pools.