Style: Make overflow popupmenu show below topappbar

Signed-off-by: Akane Beneckendorff <akane@akanework.org>

Author: AkaneTan

app/src/main/res/menu/top_app_bar.xml

@@ -5,6 +5,6 @@
         android:id="@+id/more"
         android:icon="@drawable/ic_more_vert"
         android:iconTint="?attr/colorOnSurface"
-        android:title="@string/more"
-        app:showAsAction="ifRoom" />
+        android:title="@string/about"
+        app:showAsAction="never" />
 </menu>

app/src/main/res/values-zh-rCN/strings.xml

@@ -1,6 +1,6 @@
 <resources>
     <string name="app_name">校验者</string>
-    <string name="more">更多</string>
+    <string name="about">关于</string>
     <string name="widevine">Widevine</string>
     <string name="drm_security_level">安全等級</string>
     <string name="drm_version">版本</string>

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

@@ -1,6 +1,6 @@
 <resources>
     <string name="app_name">Checker</string>
-    <string name="more">more</string>
+    <string name="about">About</string>
     <string name="widevine">Widevine</string>
     <string name="drm_security_level">Security Level</string>
     <string name="drm_version">Version</string>

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

@@ -7,12 +7,20 @@
         <item name="android:navigationBarColor">@android:color/transparent</item>
         <item name="android:windowLightStatusBar">@bool/lightStatusBarContent</item>
         <item name="fontFamily">sans-serif</item>
+        <item name="actionOverflowMenuStyle">@style/OverflowMenu</item>
     </style>
 
     <style name="CheckerDialogTheme" parent="Theme.AppCompat.DayNight.Dialog.Alert">
         <item name="android:background">?attr/colorSurface</item>
         <item name="dialogCornerRadius">8dp</item>
     </style>
 
+    <style name="OverflowMenu" parent="Widget.Material3.PopupMenu.Overflow">
+        <item name="android:windowDisablePreview">true</item>
+        <item name="overlapAnchor">false</item>
+        <item name="android:dropDownVerticalOffset">5.0dp</item>
+        <!--<item name="android:popupBackground">#FFF</item>-->
+    </style>
+
     <style name="Theme.Checker" parent="Base.Theme.Checker" />
 </resources>