Fix bottom nav sometimes not hide correctly

Replace homemade animation with StateListAnimator

app/src/main/res/layout/activity_main_md2.xml

@@ -48,7 +48,7 @@
 
         </com.google.android.material.appbar.AppBarLayout>
 
-        <com.google.android.material.bottomnavigation.BottomNavigationView
+        <com.topjohnwu.magisk.widget.ConcealableBottomNavigationView
             android:id="@+id/main_navigation"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

app/src/main/res/values/attrs.xml

@@ -47,4 +47,8 @@
         </attr>
     </declare-styleable>
 
+    <declare-styleable name="ConcealableView">
+        <attr name="state_hidden" format="boolean" />
+    </declare-styleable>
+
 </resources>