fix: endpoint_client configure bug fix

packages/analytics/amplify_analytics_pinpoint_dart/lib/src/impl/analytics_client/endpoint_client/endpoint_client.dart

@@ -149,18 +149,33 @@ class EndpointClient {
 
   /// Send local Endpoint instance to AWS Pinpoint.
   Future<void> updateEndpoint() async {
+    Future<void> update({bool throwSessionExpired = false}) async {
+      try {
+        await _pinpointClient
+            .updateEndpoint(
+              UpdateEndpointRequest(
+                applicationId: _pinpointAppId,
+                endpointId: _fixedEndpointId,
+                endpointRequest: _endpointToRequest(getPublicEndpoint()),
+              ),
+            )
+            .result;
+      } on SessionExpiredException catch (e) {
+        // rethrow SessionExpiredException so that it can be retried.
+        if (throwSessionExpired) rethrow;
+        throw fromPinpointException(e);
+      } on Exception catch (e) {
+        throw fromPinpointException(e);
+      }
+    }
+
     try {
-      await _pinpointClient
-          .updateEndpoint(
-            UpdateEndpointRequest(
-              applicationId: _pinpointAppId,
-              endpointId: _fixedEndpointId,
-              endpointRequest: _endpointToRequest(getPublicEndpoint()),
-            ),
-          )
-          .result;
-    } on Exception catch (e) {
-      throw fromPinpointException(e);
+      await update(throwSessionExpired: true);
+    } on SessionExpiredException {
+      // When SessionExpiredException is thrown, the local credential store
+      // is cleared. At this point the operation should be retired with guest
+      // credentials.
+      await update();
     }
   }