fixed error when trying to create same client

shared/EShopOnAbp.Keycloak.DbMigrator/KeycloakDataSeeder.cs

@@ -210,17 +210,17 @@ public class KeyCloakDataSeeder : IDataSeedContributor, ITransientDependency
                 { "oidc.ciba.grant.enabled", false },
                 { "client_credentials.use_refresh_token", false }
             };
-        }
+            
-
+            await _keycloakClient.CreateClientAsync(_keycloakOptions.RealmName, cmsKitClient);
-        await _keycloakClient.CreateClientAsync(_keycloakOptions.RealmName, cmsKitClient);
 
-        await AddOptionalClientScopesAsync(
+            await AddOptionalClientScopesAsync(
-            "EShopOnAbp_CmskitService",
+                "EShopOnAbp_CmskitService",
-            new List<string>
+                new List<string>
-            {
+                {
-                "IdentityService"
+                    "IdentityService"
-            }
+                }
-        );
+            );
+        }
     }
 
     private async Task CreateWebClientAsync()