style: 优化 framework_display.xml 的 XML 结构与缩进

- **XML 结构修复:** 修正了 `PreferenceCategory` 标签的闭合逻辑，解决了背屏（subscreen）配置项在 XML 中的嵌套层级问题。
- **格式调整:** 统一了配置项的缩进格式，提升了资源文件的可读性。

Signed-off-by: ghhccghk <2137610394@qq.com>

Author: ghhccghk

library/core/src/main/res/xml/framework_display.xml

@@ -49,20 +49,18 @@
             android:title="@string/system_framework_enhance_recents_visibility"
             android:key="prefs_key_system_framework_enhance_recents_visibility" />
 
+    </PreferenceCategory>
 
-        <PreferenceCategory android:title="@string/subscreen">
-            <SwitchPreference
-                android:defaultValue="false"
-                android:key="prefs_key_system_framework_fuck_subscreen_whiteList"
-                android:title="@string/system_framework_fuck_subscreen_whiteList" />
-
-            <SwitchPreference
-                android:defaultValue="false"
-                android:key="prefs_key_system_framework_fuck_subscreen_not_go_to_home"
-                android:title="@string/system_framework_fuck_subscreen_not_go_to_home" />
-
-        </PreferenceCategory>
+    <PreferenceCategory android:title="@string/subscreen">
+        <SwitchPreference
+            android:defaultValue="false"
+            android:key="prefs_key_system_framework_fuck_subscreen_whiteList"
+            android:title="@string/system_framework_fuck_subscreen_whiteList" />
 
+        <SwitchPreference
+            android:defaultValue="false"
+            android:key="prefs_key_system_framework_fuck_subscreen_not_go_to_home"
+            android:title="@string/system_framework_fuck_subscreen_not_go_to_home" />
 
     </PreferenceCategory>