Function type arguments ignored for `Array.prototype.reduce` when array is generic

[fading matrix]

makk0#0

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Preview:```ts
function foo<K extends PropertyKey>(
keys: K[]
): Record<K, any> {
return keys.reduce<Record<K, any>>(acc => acc, {})
}

function bar<K extends PropertyKey>(
keys: K[]
): Record<K, any> {
return keys.reduce(acc => acc, {} as Record<K, any>)
}```

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[fleet lance]

As far as I know, these two approaches (specifying the generic type via angle brackets and specifying it via a type assertion) are equivalent for Array.prototype.reduce, but here the first one errors and the second doesn't