[BUG] `no-useless-await` is applied to locator methods regardless of receiver object

[ppath]

For the locator methods, the check is only against the method name and not the receiver object type. Therefore, in the following example the await before a.locator(); is marked as useless:

class A {
  locator(): Promise<void>;
}
async function () {
  const a = new A;
  await a.locator();
}

It seems the relevant logic is here, and I wonder if there could be an additional check on the receiver object for locator methods, like the one for page methods.