Added mainline_sdk to list of native namespaces

Change-Id: I438ecc09c4d6845a17270c427bfc7598873fd049
Test: m
Bug: b/302289782

services/core/java/com/android/server/am/SettingsToPropertiesMapper.java

@@ -138,6 +138,7 @@ public class SettingsToPropertiesMapper {
         "haptics",
         "hardware_backed_security_mainline",
         "machine_learning",
+        "mainline_sdk",
         "media_audio",
         "media_solutions",
         "nfc",