Fix/button issue

[ankitkarki17]

Changes proposed in this Pull Request

• Fixed design issue in search button of eStore theme caused by WP 5.8.

Type of change

• [ ] Code Refactor
• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How to test the changes in this Pull Request:

• Add a Search widget and check the design of the search button in the front.

Checklist:

• [x] My code follows WordPress' coding standards
• [x] I've checked to ensure there are no other open Pull Requests for the same update/change?
• [x] I have performed a self-review of my own code
• [ ] I have commented on my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have made perform a test that proves my fix is effective or that my feature works

  Did you test this issue fix on all browsers?

• [x] Chrome
• [ ] Firefox
• [ ] Edge
• [ ] opera

  Changelog entry

• Fix - Search button design issue caused by WP 5.8.