Go to definition on callback goes to type position


**Expected behavior:**
```ts
function test(/*to*/callback: (a: any) => void) {
    callback/*from*/(d);
}
```
**Actual behavior:**
```ts
function test(callback: /*to*/(a: any) => void) {
    callback/*from*/(d);
}
```
When callback is just function value expression, it goes to the correct position:
```ts
function test(/*to*/callback: (a: any) => void) {
    callback/*from*/;
}
```