Incomplete declaration emit of callback tag with no return tag

## Steps to reproduce
From

test: submodule/conformance/jsDeclarationsFunctionPrototypeStatic.ts
after #826 is merged

```js
/** @callback {Done}
 * @param {number} failures - the number of failures
 */
```

## Behavior with `typescript@5.8`

```ts
export type Done = (failures: number) => any;
```

## Behavior with `tsgo`

```ts
export type Done = (failures: number) ;
```