The `htmx:trigger` event is fired whenever an HTMX AJAX request would
be. Now, `hx-trigger` can also be specified on an element without an
AJAX request, which will simply fire the `htmx:trigger` event on the
action specified by the attribute, and do nothing else.
This pattern allows for specifying client-side actions that don't
require a network request, while remaining within the HTMX control
paradigm.
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