[Forwardport] Disable autocomplete for captcha inputs

[mage2pratik]

Original Pull Request

#17114

Description

This PR removes captcha input autocomplete

Manual testing scenarios

1. Go to login page
2. Try to login with incorrect login/password until you get captha
3. Click on captcha input field

Before

After

[magento-engcom-team]

Hi @mage2pratik. 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

[magento-engcom-team]

Hi @ihor-sviziev, thank you for the review.
ENGCOM-2578 has been created to process this Pull Request

[magento-engcom-team]

Hi @mage2pratik. 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.