fix(adobe-kit): null-safe current user identities lookup

Use a safe-call when reading currentUser.userIdentities during ID sync to avoid NPE when no current user is available.

Made-with: Cursor

Author: denischilik

kits/adobe/adobe-5/src/main/kotlin/com/mparticle/kits/AdobeKitBase.kt

@@ -140,7 +140,7 @@ abstract class AdobeKitBase :
             dcsRegion,
             pushId,
             gaid,
-            currentUser.userIdentities ?: emptyMap(),
+            currentUser?.userIdentities ?: emptyMap(),
         )
     }