Crop type delete form doesn't warn of deleting dependent config such as image styles

Thanks @drdam for your MR.
Changes looks good, and it makes perfect sense to implement it.
And it looks like change record required to deploy these changes.

Can you please update delete functional test.
Probably this can be implemented at CropFunctionalTest::testCropTypeCrud().

@drdam please provide change record to this issue.
And test doesn't seem to be updated.
Set back to NW.

@nikolay shapovalov : sorry for that, after nearly 2 month, I have presume it be ok for you ...