Add slot support to Pajamas alert component
Per this conversation this MR refactors the Pajamas::AlertComponent to use slots to render body and action sections. This makes it so we don't have to use the .gl-alert-body and .gl-alert-actions in every use.
I didn't check every single alert manually but I did spot check a few of them.
The below are expected to look the same:
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Edited by Peter Hegman