[DO NOT MERGE] toString method for ScanFastPairStoreItem helps debug

Test: Build
Bug: 218771606
Change-Id: If017c953602679a3dda8bbfc9137cc5483c19187
(cherry picked from commit f6d76e9c977a57f9900a9d6dee080e6f1703ed40)
diff --git a/nearby/service/java/com/android/server/nearby/util/DataUtils.java b/nearby/service/java/com/android/server/nearby/util/DataUtils.java
index ce738c8..2654d0b 100644
--- a/nearby/service/java/com/android/server/nearby/util/DataUtils.java
+++ b/nearby/service/java/com/android/server/nearby/util/DataUtils.java
@@ -50,6 +50,20 @@
     }
 
     /**
+     * Prints readable string for a {@link ScanFastPairStoreItem}.
+     */
+    public static String toString(ScanFastPairStoreItem item) {
+        return "ScanFastPairStoreItem=[address:" + item.getAddress()
+                + ", actionUr:" + item.getActionUrl()
+                + ", deviceName:" + item.getDeviceName()
+                + ", iconPng:" + item.getIconPng()
+                + ", iconFifeUrl:" + item.getIconFifeUrl()
+                + ", antiSpoofingKeyPair:" + item.getAntiSpoofingPublicKey()
+                + ", fastPairStrings:" + toString(item.getFastPairStrings())
+                + "]";
+    }
+
+    /**
      * Prints readable string for a {@link FastPairStrings}
      */
     public static String toString(FastPairStrings fastPairStrings) {