fix(Accessibility) - Decorative image missing empty alt attribute

[StoianLucian]

Ticket: SITES-2852

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [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 change)

Checklist:

• [x] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.

[StoianLucian]

The change is not relalted to the failed test

[StoianLucian]

@Pareesh is there anything else we should do regarding this ticket? If not could you merge it?