IDE doesn't recognize model that fetched from a relation query

[MatanYadaev]

Versions:

• ide-helper Version: 2.10.0
• Laravel Version: 8.50.0
• PHP Version: 8.0.8

Summary:

The IDE doesn't recognize model that got fetched from a relation query.

class Book extend Model
{
  public function authors(): BelongToMany
  {
    return $this->belongsToMany(Author::class)->withTimestamps();
  }
}

$book = Book::first();

// PHPStorm recognizes `$author` as `Author|mixed` - which is good
$author = $book->authors[0];

// PHPStorm recognizes `$author2` as `Model|BelongsToMany|null`
$author2 = $book->authors()->firstOrFail();

// PHPStorm recognizes `$author3` as `mixed`
$author3 = $book->authors()->get()->first();

// PHPStorm recognizes `$author4` as `mixed`
$author4 = $book->authors->first();

As you can see, the IDE didn't recognize correctly the type of $author2 & $author3 & $author4.