Fix default devShell

I had this lying around locally, but it won't work in CI if I don't
commit it.

flake.nix

@@ -112,7 +112,9 @@
             nativeBuildInputs = with pkgs; [
               bump-version
               nodejs
-              (tree-sitter.override { webUISupport = true; })
+              # FIXME: waiting on #301336
+              # (tree-sitter.override { webUISupport = true; })
+              tree-sitter
             ];
 
             inherit (checks.pre-commit) shellHook;