【A15】默认关闭屏保

项目场景：

需求默认关闭屏保

---

解决方案：

diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index e13cc1348c60..5c8e7b0171da 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -2714,7 +2714,7 @@
     <bool name="config_dreamsSupported">true</bool>
 
     <!-- If supported, are dreams enabled? (by default) -->
-    <bool name="config_dreamsEnabledByDefault">true</bool>
+    <bool name="config_dreamsEnabledByDefault">false</bool>
     <!-- If supported and enabled, are dreams activated when docked? (by default) -->
     <bool name="config_dreamsActivatedOnDockByDefault">false</bool>
     <!-- If supported and enabled, are dreams activated when asleep and charging? (by default) -->