fix: Restore negative margin in splitbutton

src/stories/buttons/split-button/index.tsx

@@ -1,7 +1,14 @@
 import { SplitButton as ZendeskSplitButton } from "@zendeskgarden/react-buttons";
 import { forwardRef } from "react";
+import styled from "styled-components";
 import { SplitButtonArgs } from "./_types";
 
+const SplitButtonWrapper = styled.div`
+  [data-garden-id="buttons.button"] {
+    margin-right: -1px;
+  }
+`;
+
 /**
 A Split button is a hybrid between a Dropdown Menu and a Button. It lets users choose from parallel actions and take action on their choice.
 <hr>
@@ -10,7 +17,11 @@ Used for this:
 - To reduce visual complexity when there are multiple actions a user can take
 **/
 const SplitButton = forwardRef<HTMLDivElement, SplitButtonArgs>(
-  (props, ref) => <ZendeskSplitButton ref={ref} {...props} />
+  (props, ref) => (
+    <SplitButtonWrapper>
+      <ZendeskSplitButton ref={ref} {...props} />
+    </SplitButtonWrapper>
+  )
 );
 
 export { SplitButton };