Don't start fingerprint for FOD devices early

commit 5cece53 causes fingerprint to start early
while going to sleep and this is not the expected behaviour for devices
with FOD since we have to apply DIM and HBM simultaneously which causes
device to give flicker effect while putting phone to sleep.

Change-Id: I67b4cdbc92556b54c6e865f2332732a35f2eec57

Author: TheScarastic

packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java

@@ -100,6 +100,8 @@
 import com.android.systemui.util.DeviceConfigProxy;
 import com.android.systemui.util.InjectionInflationController;
 
+import com.android.internal.util.custom.fod.FodUtils;
+
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.util.ArrayList;
@@ -380,6 +382,8 @@ public class KeyguardViewMediator extends SystemUI implements Dumpable {
     private IKeyguardDrawnCallback mDrawnCallback;
     private CharSequence mCustomMessage;
 
+    private boolean mHasFod;
+
     private final DeviceConfig.OnPropertiesChangedListener mOnPropertiesChangedListener =
             new DeviceConfig.OnPropertiesChangedListener() {
             @Override
@@ -748,6 +752,7 @@ public KeyguardViewMediator(
                 QuickStepContract.isGesturalMode(navigationModeController.addListener(mode -> {
                     mInGestureNavigationMode = QuickStepContract.isGesturalMode(mode);
                 }));
+        mHasFod = FodUtils.hasFodSupport(context);
     }
 
     public void userActivity() {
@@ -878,7 +883,9 @@ public void onStartedGoingToSleep(int why) {
             // explicitly DO NOT want to call
             // mKeyguardViewControllerLazy.get().setKeyguardGoingAwayState(false)
             // here, since that will mess with the device lock state.
-            mUpdateMonitor.dispatchKeyguardGoingAway(false);
+            if (!mHasFod) {
+                mUpdateMonitor.dispatchKeyguardGoingAway(false);
+            }
 
             // Lock immediately based on setting if secure (user has a pin/pattern/password).
             // This also "locks" the device when not secure to provide easy access to the