Fix incorrect warning for IonQ command line parameters (#1173)

Base64 encoding was incorrectly triggering a warning. This change fixes
that by performing base64 decoding on the appropriate command-line
parameters.

runtime/cudaq/platform/default/rest/helpers/ionq/ionq.config

@@ -1,5 +1,5 @@
 # ============================================================================ #
-# Copyright (c) 2022 - 2023 NVIDIA Corporation & Affiliates.                   #
+# Copyright (c) 2022 - 2024 NVIDIA Corporation & Affiliates.                   #
 # All rights reserved.                                                         #
 #                                                                              #
 # This source code and the accompanying materials are made available under     #
@@ -44,10 +44,16 @@ while [ $# -gt 1 ]; do
 	--ionq-machine)
 		PLATFORM_EXTRA_ARGS="$PLATFORM_EXTRA_ARGS;qpu;$2"
 		IONQ_MACHINE="$2"
+		if [ "${IONQ_MACHINE:0:7}" == "base64_" ]; then
+			IONQ_MACHINE=$(echo ${2#base64_} | base64 -d)
+		fi
 		;;
 	--ionq-noise-model)
 		PLATFORM_EXTRA_ARGS="$PLATFORM_EXTRA_ARGS;noise;$2"
 		IONQ_NOISE_MODEL="$2"
+		if [ "${IONQ_NOISE_MODEL:0:7}" == "base64_" ]; then
+			IONQ_NOISE_MODEL=$(echo ${2#base64_} | base64 -d)
+		fi
 		;;
 	--ionq-debias)
 		PLATFORM_EXTRA_ARGS="$PLATFORM_EXTRA_ARGS;debias;$2"