[SG-36338] Wildcard <Icon /> accessibility, Default role="img"

Created by: gitstart-sourcegraph

Description

In order to split the Icon accessibility efforts into smaller PRs, we've had to remove the default prop role="img" from the wildcard's icon component.

Ref

SG Issue GitStart Ticket

Acceptance criteria

• We now have img set as default role, within the wildcards's Icon component.

Time estimate

• Pull requests with ~450 lines changed should take 2 hours at maximum. Ping the reviewer in the spec pull request if time-consuming changes are required.
• Split the work into multiple pull requests if the total diff is bigger than 450 lines of code.

Implementation Detail

1. Make role prop default to img within the wildcard component
2. we have ensured to follow this order during migration <Icon role="img" ... /> i.e use the find and replace tool (on vscode or any other editor), to find every usage instance of <Icon role="img" and replace with <Icon

Test Plan

Ensure there are no UI changes on both storybook and application

App preview:

• Web
• Storybook

Check out the client app preview documentation to learn more.