PHP Storm - wrong quick fix hint '$relationModels[Deal::class]->items[$parseResultDto->key] ?? null' is always 'null'

php_storm_quick_fix_wrong_example.php

<?php

namespace App\Domain\Entities\LootList;

use App\Domain\Entities\LootList\Models\LootList;
use Illuminate\Database\Eloquent\Model;
use ItemSchema\Parser\DataTransferObjects\LootListParseResultDto;

class LootListToItemSyncService
{
    protected function findOwnerModel(object $parseResultDto, array $relationModels): ?Model
    {
        /** @var LootListParseResultDto $parseResultDto */
        // '$relationModels[LootList::class]->items[$parseResultDto->key] ?? null' is always 'null'
        return $relationModels[LootList::class]->items[$parseResultDto->key] ?? null;
    }

    protected function findOwnerModel2(object $parseResultDto, array $relationModels): ?Model
    {
        /** @var LootListParseResultDto $parseResultDto */
        return $relationModels[LootList::class]->items[$parseResultDto->key] ? new LootList() : null;
    }
}