Bypass flags checks for Notification constrctors

Close #98 #96 as fixed.
In the decomplied smali files, the method `load_overrides_systemui`
of the class `FeatureFlagsImpl` is called only if its field
`systemui_is_cached` is false.

daemon/src/main/java/org/lsposed/lspd/service/ServiceManager.java

@@ -41,6 +41,7 @@
 import org.lsposed.daemon.BuildConfig;
 
 import java.io.File;
+import java.lang.Class;
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -151,6 +152,9 @@ public static void start(String[] args) {
 
         ConfigFileManager.reloadConfiguration();
 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.VANILLA_ICE_CREAM)
+            notificationWorkaround();
+
         BridgeService.send(mainService, new BridgeService.Listener() {
             @Override
             public void onSystemServerRestarted() {
@@ -237,6 +241,18 @@ private static void permissionManagerWorkaround() {
         }
     }
 
+    private static void notificationWorkaround() {
+        try {
+            Class feature = Class.forName("android.app.FeatureFlagsImpl");
+            Field systemui_is_cached = feature.getDeclaredField("systemui_is_cached");
+            systemui_is_cached.setAccessible(true);
+            systemui_is_cached.set(null, true);
+            Log.d(TAG, "set flag systemui_is_cached to true");
+        } catch (Throwable e) {
+            Log.e(TAG, "failed to change feature flags", e);
+        }
+    }
+
     private static class BinderProxy extends Binder {
         private static final Method rawGetService;