Add strong verification of dismissible alert components

What does this MR do and why?

Add strong verification of dismissible alert components

• when using callouts this will enable us to verify setup very early in the development/test process so that we can eventually get away from desiring feature specs to test the callout framework for each use.
• simplify setup in calling.
• see #563884 (closed)

Previews

• http://gdk.test:3000/rails/lookbook/inspect/users/dismissible_alert/default
• http://gdk.test:3000/rails/lookbook/inspect/users/group_dismissible_alert/default
• http://gdk.test:3000/rails/lookbook/inspect/users/project_dismissible_alert/default

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #563884 (closed)