Added validation on maximum quantity allowed in shopping cart

[gelanivishal]

Description

Fixed validation maximum allowed quantity in cart,

Fixed Issues (if relevant)

1. Set maximum Qty Allowed in Shopping Cart is 0 still allow adding to cart #18477: Set maximum Qty Allowed in Shopping Cart is 0 still allow adding to cart

Manual testing scenarios

1. Click to edit simple product, then click "Advanced Inventory ", enter 0 in "maximum Qty Allowed in Shopping Cart" field
2. Don't allow to add 0 in input box

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[rogyar]

@magento-engcom-team give me 2.3-develop instance

[magento-engcom-team]

Hi @rogyar. Thank you for your request. I'm working on Magento 2.3-develop instance for you

[magento-engcom-team]

Hi @rogyar, here is your Magento instance.
Admin access: https://i-18481-2-3-develop.engcom.dev.magento.com/admin
Login: admin Password: 123123q
Instance will be terminated in up to 3 hours.

[rogyar]

@magento-engcom-team give me test instance

[magento-engcom-team]

Hi @gelanivishal. Thank you for your contribution.
We will aim to release these changes as part of 2.3.1.
Please check the release notes for final confirmation.