fix: update svelte_visitors type to accept any nodes

This allows TypeScript node visitor overrides to be included without type errors.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

packages/svelte/src/compiler/print/index.js

@@ -326,7 +326,7 @@ const css_visitors = {
 
 /**
  * @param {AST.JSComment[]} comments
- * @returns {Visitors<AST.SvelteNode>}
+ * @returns {Visitors<any>}
  */
 const svelte_visitors = (comments) => ({
 	Root(node, context) {