fixed build error

Author: mvladic

packages/project-editor/ui-components/Output.tsx

@@ -204,7 +204,8 @@ const MessageContent = observer(
             let text =
                 typeof this.props.message.text == "string"
                     ? this.props.message.text
-                    : this.props.message.text?.toString() ?? "";
+                    : (this.props.message.text as any)?.toString() ?? "";
+
             if (text.length > MAX_OUTPUT_MESSAGE_TEXT_SIZE) {
                 text = text.substring(0, MAX_OUTPUT_MESSAGE_TEXT_SIZE) + "...";
             }