Fix flag namespace for secure_array_zeroization

Apparently it needs to be just security, not platform_security.

Bug: 320392352
Test: N/A
Change-Id: I6d44d17d5ce42af9a69bbfd26b06af83d7a26576
diff --git a/core/java/android/security/flags.aconfig b/core/java/android/security/flags.aconfig
index ceee898b..4249372 100644
--- a/core/java/android/security/flags.aconfig
+++ b/core/java/android/security/flags.aconfig
@@ -43,7 +43,7 @@
 
 flag {
     name: "secure_array_zeroization"
-    namespace: "platform_security"
+    namespace: "security"
     description: "Enable secure array zeroization"
     bug: "320392352"
     metadata {