Adobe stock integration Issue-761: Highlight the selected image in the grid

[serhiyzhovnir]

This PR adds styles to a selected image in the grid.

Fixed Issues (if relevant)

1. Highlight the selected image in the grid adobe-stock-integration#761: Highlight the selected image in the grid

Manual testing scenarios (*)

1. Login to admin panel
2. Open Magento Media Gallery (i.e. go to Cms -> Pages, edit the page and insert image)
3. Click "Search Adobe Stock" button to open images grid
4. Click on any image to expand image preview

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 are green)

[m2-assistant]

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[sivaschenko]

Thanks for the PR @serhiyzhovnir ! Can you please cover the added method with a jasmine test?

[slavvka]

@magento run all tests

[VladimirZaets]

Hi @serhiyzhovnir. Thanks for collaboration. Due to Magento Definition of Done all code must be covered by tests. Please cover your fix by automated tests.

[sivaschenko]

@VladimirZaets this PR is improving the opening image preview functionality that is covered by MFTF tests: https://github.com/magento/adobe-stock-integration/tree/1.1-develop/AdobeStockImageAdminUi/Test/Mftf/Test

[engcom-Delta]

✔️ QA passed

[m2-assistant]

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