This component represents an alert.
An alert may be closed automatically, on event, or not closable at all.
The following attributes are available:
alert-type: One of basic, custom, or self-closing.closeable: One of true or false.closeTimer: A unit of time in milliseconds for how long to wait before auto-closing.theme-variant: The name of a theme variant to use for the alert.tl-alert component with no customizations.