fix: FunctionSignature return type border (#9050)

fix: remove border and padding when FunctionSignature has only return

Author: canerakdas

packages/ui-components/src/Common/Signature/SignatureItem/index.tsx

@@ -18,6 +18,7 @@ const SignatureItem: FC<PropsWithChildren<SignatureItemProps>> = ({
   children,
 }) => (
   <div
+    data-kind={kind}
     className={classNames(styles.item, {
       [styles.return]: kind === 'return',
     })}

packages/ui-components/src/Common/Signature/SignatureRoot/index.module.css

@@ -22,4 +22,10 @@
     px-4
     py-3
     dark:border-neutral-900;
+
+  &:has(> [data-kind='return']:only-child) {
+    @apply border-0
+      px-0
+      py-0;
+  }
 }