#3446773 by n.ghunaim: Switch styling of the sitewide alert with adding the sdc/varbase_components--alert library to sitewide_alert/init dependences

Remaining tasks

• File an issue about this project
• Addition/Change/Update/Fix to this project
• Testing to ensure no regression
• Automated unit/functional testing coverage
• Developer Documentation support on feature change/addition
• User Guide Documentation support on feature change/addition
• UX/UI designer responsibilities
• Accessibility and Readability
• Code review from 1 Varbase core team member
• Full testing and approval
• Credit contributors
• Review with the product owner
• Update Release Notes and Update Helper on new feature change/addition
• Release

Related to #3446773