Add native flag namespace for input

For experiment flag testing, add input_native_boot flag in DeviceConfig

Test: presubmit
Bug: 120794829
Change-Id: I1ee76cb1210379bd5c04c19de71c777948c2dad3
diff --git a/services/core/java/com/android/server/am/SettingsToPropertiesMapper.java b/services/core/java/com/android/server/am/SettingsToPropertiesMapper.java
index d5ede5b..c2117a7 100644
--- a/services/core/java/com/android/server/am/SettingsToPropertiesMapper.java
+++ b/services/core/java/com/android/server/am/SettingsToPropertiesMapper.java
@@ -77,6 +77,7 @@
     // permission in the corresponding .te file your feature belongs to.
     @VisibleForTesting
     static final String[] sDeviceConfigScopes = new String[] {
+        DeviceConfig.NAMESPACE_INPUT_NATIVE_BOOT,
     };
 
     private final String[] mGlobalSettings;