Add a flag to protect overwrite app optimization mode to restricted mode.

- Skip set app optimization mode to restricted if the flag disabled.

Bug: 348192536
Fix: 348192536
Test: atest
Flag: EXEMPT bug fix
Change-Id: I92d320ce1edfe9b7044afdcd058651b0d54bd6bd

src/com/android/settings/fuelgauge/PowerUsageFeatureProvider.java

@@ -44,6 +44,9 @@ public interface PowerUsageFeatureProvider {
     /** Check whether the battery tips card is enabled in the battery usage page */
     boolean isBatteryTipsEnabled();
 
+    /** Check whether overwrite the app optimization mode to restricted mode is enabled */
+    boolean isRestrictedModeOverwriteEnabled();
+
     /** Check whether force expire the app optimization mode. */
     boolean isForceExpireAppOptimizationModeEnabled();