Revert "Fixed #11973: `yii\helpers\BaseHtml::getAttributeValue()` fixed to work with `items[]` notation correctly"
Revert "Fixed #11973: `yii\helpers\BaseHtml::getAttributeValue()` fixed to work with `items[]` notation correctly"

This reverts commit 3fcc26996b9395d2892839b5bc8071c99a6cab07.

yiisoft/yii2-framework,yiisoft/yii2-framework