Change the type of token of startImsTraffic from String to int

Bug: 219242095
Test: atest VtsHalRadioTargetTest
Change-Id: Ie9584fb10111f480e89a0119d17407e76d39fd89
diff --git a/radio/aidl/vts/radio_ims_utils.h b/radio/aidl/vts/radio_ims_utils.h
index c981ebc..a435e44 100644
--- a/radio/aidl/vts/radio_ims_utils.h
+++ b/radio/aidl/vts/radio_ims_utils.h
@@ -64,7 +64,7 @@
     virtual ~RadioImsIndication() = default;
 
     virtual ndk::ScopedAStatus onConnectionSetupFailure(RadioIndicationType type,
-            const std::string& token, const ConnectionFailureInfo& info) override;
+            int32_t token, const ConnectionFailureInfo& info) override;
 
     virtual ndk::ScopedAStatus notifyAnbr(RadioIndicationType type, ImsStreamType mediaType,
             ImsStreamDirection direction, int bitsPerSecond) override;