Fixed - Fatal Error when save configurable product in Magento 2.2.5 #18082

[Shubham0492]

Description
I have checked that if there is any validation error exist then after click save button configurable-matrix data remove.You can check the file app/code/Magento/ConfigurableProduct/view/adminhtml/web/js/variations/variations.js in function serializeData due to fatal error comes.Now I have added condition that if there is any validation error exist then configurable-matrix data will not remove and after submit form all value will exist and product will successfully save.

Fixed Issues (if relevant)
1 - #18082: Fatal Error when save configurable product in Magento 2.2.5

Manual testing scenarios
Add new configurable product with name and sku of 63 characters length For Example: "Amzer 203877 Kristal FULL HD Tempered Glass for OnePlus 6 Clear".
Now click on "Create Configuration" button.
Now, When you try to save it's configuration, It shows client side validation error for child products SKUs. Decrease length of child product's SKUs and then save the product. It generates a error report as attached.But after apply changes product successfully saved.

Contribution checklist
Pull request has a meaningful description of its purpose
All commits are accompanied by meaningful commit messages

[magento-cicd2]

All committers have signed the CLA.

[magento-engcom-team]

Hi @Shubham-Webkul. Thank you for your contribution
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[sidolov]

Hi @Shubham-Webkul , looks like you made some commits with email different than in your GitHub profile, please, add email from commits to your profile!
Thank you!

[Shubham0492]

@sidolov as i have checked that i done all commits using [email protected] email.Please let me know clearly what mistake i am doing.So that i can fix it.
Thank You!

[Shubham0492]

@sidolov I have added all emails which used to make commit.
Thank You!

[Shubham0492]

#SQUASHTOBERFEST

[orlangur]

#18461 seems to be an exact backport of 2.3.x fix.

@Shubham-Webkul thanks for your endeavours!