Fix b/265746746: Announce "Battery usage for [slot_timestamp]" instead of changing focus when Talk Back on.

https://drive.google.com/file/d/173RPKsnIE7ZhBAJLrivqkbiWg9Ay41bC/view?usp=sharing&resourcekey=0-jHJ7vZ9BEhzxdWncqCQVQg

Bug: 265746746
Fix: 265746746
Test: manual
Change-Id: Iad92eff50d73853793daa9d6d3551768678c2eb2

res/xml/power_usage_advanced.xml

@@ -38,7 +38,7 @@
 
     </PreferenceCategory>
 
-    <com.android.settings.fuelgauge.batteryusage.AccessibilityFocusablePreferenceCategory
+    <PreferenceCategory
         android:key="battery_usage_breakdown"
         settings:controller=
             "com.android.settings.fuelgauge.batteryusage.BatteryUsageBreakdownController"
@@ -58,5 +58,5 @@
             settings:isPreferenceVisible="false"
             settings:searchable="false" />
 
-    </com.android.settings.fuelgauge.batteryusage.AccessibilityFocusablePreferenceCategory>
+    </PreferenceCategory>
 </PreferenceScreen>