Fix for invalid JSON if image label contains HTML markup, example "

[jeroenschipper]

Description

We experienced an issue with invalid JSON in the adminhtml when an image label contains html markup (example "). This resulted in an error when opening the images and videos tab when editing an product.

Fixed Issues (if relevant)

1. I do not know any current issues for this problem

Manual testing scenarios

1. add a new image to an product in the adminhtml with an label containing " " "
2. save the product
3. check if you can open your images and video tab in the adminhtml

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)

[magento-engcom-team]

Hi @jeroenschipper. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
Add the comment under your pull request to deploy test or vanilla Magento instance:

• @magento-engcom-team give me test instance - deploy test instance based on PR changes
• @magento-engcom-team give me {$VERSION} instance - deploy vanilla Magento instance

For more details, please, review the Magento Contributor Assistant documentation

[nuzil]

Thanks a lot for your contribution

[magento-engcom-team]

Hi @nuzil, thank you for the review.
ENGCOM-2910 has been created to process this Pull Request

[jeroenschipper]

Hi @nuzil and @magento-engcom-team,

Glad to help!

[magento-engcom-team]

Hi @jeroenschipper. Thank you for your contribution.
We will aim to release these changes as part of 2.3.0.
Please check the release notes for final confirmation.