Fix #5602 icons not shown in add dashlet search.

[e-reeley]

Description

This change allows the icons to be shown within the search feature of 'Add dashlet' instead of just the file name.

Motivation and Context

Issue #5602

How To Test This

1. From the homepage click on the actions tab
2. Select add dashlet
3. Enter in a search string, e.g. 'My'
4. See that the modules and icons are correctly displayed

Types of changes

• 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)

Final checklist

• My code follows the code style of this project found here.
• My change requires a change to the documentation.
• I have read the How to Contribute guidelines.

[Dillon-Brown]

Assessed