[Backport] Fix issue with file uploading if an upload field is disabled

[serhiyzhovnir]

Original Pull Request

#20461

Description (*)

Fixed the issue with file uploading if an upload field is disabled.

Fixed Issues (if relevant)

1. Image gets uploaded if field is disable in Category #20376: Image gets uploaded if a field is disabled in Category

Manual testing scenarios (*)

1. Login to admin panel
2. Goto Catalog present on left
3. Then goto Categories
4. Select Dafault category
5. Change Store View to Default Store view
6. Now click to content tab
7. then click Browse to find or drag image here, it will not work untill we don't remove the tick from the Use Default Value
8. But when we simply drags a image on it, then image gets added successfully.

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 @serhiyzhovnir. Thank you for your contribution
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[serhiyzhovnir]

@magento-engcom-team give me test instance

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[serhiyzhovnir]

@magento-engcom-team give me test instance

[magento-engcom-team]

Hi @serhiyzhovnir. Thank you for your request. I'm working on Magento instance for you

[magento-engcom-team]

Hi @serhiyzhovnir, here is your new Magento instance.
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[rodrigowebjump]

Hi @serhiyzhovnir Thanks for your contribution.

[magento-engcom-team]

Hi @rodrigowebjump, thank you for the review.
ENGCOM-3973 has been created to process this Pull Request

[ghost]

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