update intellisense based tests

Author: RobinMalfait

packages/tailwindcss/src/__snapshots__/intellisense.test.ts.snap

@@ -11014,6 +11014,9 @@ exports[`getClassList 1`] = `
   "scroll-py-px",
   "scroll-smooth",
   "scrollbar-auto",
+  "scrollbar-gutter-auto",
+  "scrollbar-gutter-both",
+  "scrollbar-gutter-stable",
   "scrollbar-none",
   "scrollbar-thin",
   "scrollbar-thumb-current",