fix: add parent node to SvelteFunctionBindingsExpression (#650)

Author: baseballyama

.changeset/flat-starfishes-think.md

@@ -0,0 +1,5 @@
+---
+"svelte-eslint-parser": patch
+---
+
+fix: add `parent` node to `SvelteFunctionBindingsExpression`

src/ast/script.ts

@@ -1,5 +1,6 @@
 import type ESTree from "estree";
 import type { BaseNode } from "./base.js";
+import type { SvelteBindingDirective } from "./html.js";
 
 export type SvelteScriptNode =
   | SvelteReactiveStatement
@@ -22,4 +23,5 @@ export interface SvelteFunctionBindingsExpression extends BaseNode {
     /** Setter */
     ESTree.Expression,
   ];
+  parent: SvelteBindingDirective;
 }