[sparkle] - fix: adjust leaf item width in Tree component (#8657)

- Change the width of the leaf div from class s-w-4 to s-w-3 for better alignment or visual balance

sparkle/src/components/Tree.tsx

@@ -172,7 +172,7 @@ Tree.Item = function ({
             }}
           />
         )}
-        {type === "leaf" && <div className="s-w-4 s-flex-shrink-0"></div>}
+        {type === "leaf" && <div className="s-w-3 s-flex-shrink-0"></div>}
         {checkbox && <Checkbox {...checkbox} size="xs" />}
         <Icon visual={visual} size="sm" className={tailwindIconTextColor} />
         <div