[8.x] Support times() with raw()

[dwightwatson]

With legacy model factories it was possible to get an array of raw attributes.

$posts = factory(Post::class, 10)->raw();

$posts->count() === 10;

However, the raw method I added in an earlier PR doesn't respect the times() method. Calling it made no effect on the returned result.

This PR now respects times() and returns an array of raw attributes when set.

// Before this PR:
Post::factory()->times(10)->raw(); // [...raw attributes of post]

// Following this PR:
Post::factory()->times(10)->raw(); // [array of 10 arrays with raw attributes of post]

[miki131]

You can use Null Coalescing Operator instead of checking for null

range(1, $this->count ?? 1)

[dwightwatson]

No, because that would return an array containing an array of raw attributes. If the count is null you just want the raw attributes themselves. This code uses the same pattern from the make method.