[Issue] Fix import iframe visibility

[m2-assistant]

This issue is automatically created based on existing pull request: #39265: Fix import iframe visibility

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Description

An iframe is displayed at the bottom of the import page during validation and subsequent data import

The display attribute with the value none is added to the iframe, previously it was style="display:none", but during refactoring this was incorrectly changed.

Related Commit

1edf224#diff-3160ffecaaf7ab21ba68a3b535d34ab5719602af66952aabe8a821cfac42da9aR172

Manual testing scenarios (*)

1. Go to the import page in the admin panel
2. Select any type of entity
3. Upload the file for import
4. Click "Check data"
5. Click "Import"
6. Scroll window to the bottom

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)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)

[m2-assistant]

Hi @engcom-Bravo. Thank you for working on this issue.
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[engcom-Bravo]

Hi @DmitryFurs,

Thanks for your reporting and collaboration.

We have verified the issue in Latest 2.4-develop instance and the issue is reproducible.Kindly refer the screenshots.

Manual testing scenarios

• Go to the import page in the admin panel
• Select any type of entity
• Upload the file for import
• Click "Check data"
• Click "Import"
• Scroll window to the bottom

The display attribute with the value none is added to the iframe.

Hence Confirming the issue.

Thanks.