Disable AdvancedProtectionService on desktop

It is not used in desktop so disabling it to save some memory usage.

Bug: 397667486
Test: deploy on DUT and boot
Flag: EXEMPT desktop only
Change-Id: I80006d7ed812c06efdfffc687a54e05dde5fb4d6
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index e158310..860b6fb 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -1814,7 +1814,7 @@
                 t.traceEnd();
             }
 
-            if (!isWatch && !isTv && !isAutomotive
+            if (!isWatch && !isTv && !isAutomotive && !isDesktop
                     && android.security.Flags.aapmApi()) {
                 t.traceBegin("StartAdvancedProtectionService");
                 mSystemServiceManager.startService(AdvancedProtectionService.Lifecycle.class);