#21789 Fix gallery event observer

[Den4ik]

Description (*)

This PR fix issue of opening gallery if moving mouse to image when clicking to another element of page

Original PR #21790

Fixed Issues (if relevant)

1. [BUG] Product gallery opening by mistake #21789: [BUG] Product gallery opening by mistake

Manual testing scenarios (*)

1. Open product page
2. Click to product qty move cursor to product image and up mouse button

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 @Den4ik. Thank you for your contribution
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[ghost]

@Den4ik unfortunately, only members of the maintainers team are allowed to assign developers to the pull request

[ghost]

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