Fix workflow launch form when parameter visibility is not set

#170

src/components/parameter-schema/ParameterSchemaFormComponent.vue

@@ -158,7 +158,7 @@ const defaultParameterVisibility = computed<ParameterVisibilityMapping>(() => {
 
 const currentParameterVisibility = computed<ParameterVisibilityMapping>(() =>
   props.parameterExtension?.parameter_visibility != undefined &&
-  Object.keys(props.parameterExtension?.parameter_visibility)
+  Object.keys(props.parameterExtension?.parameter_visibility).length > 0
     ? props.parameterExtension.parameter_visibility
     : defaultParameterVisibility.value,
 );