Add hx-disabled-elt to filters

This prevents users from queueing multiple requests while filtering,
which can end up replacing the filters in-place, clobbering the user's
choices.

Author: mikejamesthompson

mavis/reporting/templates/components/filters.jinja

@@ -15,6 +15,7 @@
       hx-select="#dashboard"
       hx-select-oob="#filters-form:outerHTML"
       hx-swap="outerHTML"
+      hx-disabled-elt="#filters-form input"
       hx-replace-url="true">
   {% call fieldset({
     "legend": {