Wrong ImageEffectInterface::transformDimensions implementation in \Drupal\iek\Plugin\ImageEffect\ImageBorderEffect

Problem/Motivation

Documentation:
https://git.drupalcode.org/project/drupal/-/blob/10.3.x/core/modules/ima...

Actual implementation:
Adds new keys to the $dimensions.
https://git.drupalcode.org/project/iek/-/blob/7718a943dd628e3b62fe476548...

Expected implementation:
Modify the "width" and "height" values in $dimensions.