set 60Hz refresh rate as default

Bug: 261663718
test: check dumpsys display
Change-Id: I976fec416e7562bb972ab1465b5a646ddcba5f7e

lynx/overlay/frameworks/base/core/res/res/values/config.xml

@@ -171,7 +171,7 @@
     <integer name="config_defaultRefreshRate">0</integer>
 
     <!-- The default peak refresh rate. -->
-    <integer name="config_defaultPeakRefreshRate">90</integer>
+    <integer name="config_defaultPeakRefreshRate">60</integer>
 
     <!-- the number of the max cached processes in the system. -->
     <integer name="config_customizedMaxCachedProcesses">64</integer>