fix: input rule

Author: farnabaz

src/app/src/utils/tiptap/extensions/binding.ts

@@ -69,7 +69,8 @@ export const Binding = Node.create<BindingAttrs>({
   addInputRules() {
     return [
       new InputRule({
-        find: /\{\{\s*([^\s|}]+)(?:\s*\|\|\s*([^\s}][^}]*))?\}\}/,
+        // eslint-disable-next-line regexp/no-unused-capturing-group
+        find: /\{\{\s*([^\|\s}]+)\s*(?:\|\|\s*([^}]+))?\s*}}$/,
         handler: ({ state, range, match }) => {
           const [, name, def] = match as RegExpMatchArray
           const attrs = sanitize({ value: name, defaultValue: def })