* Fix select2 change recursion from double-wired Criticality device filter
Gate the client-side Criticality filter injection on whether core already rendered the field (device_filters/CactiTableFilter) instead of a CACTI_VERSION string. When core renders it natively the handler now bails, avoiding the second widget/handler that drove the select2 change -> selection:update recursion. Legacy releases still inject once, matching core's widget engine and binding a single namespaced change handler.
* test: cover monitor_device_table_bottom() filter injection
Exercise the device_table_bottom hook that injects the legacy Criticality filter, locking in the select2 change-recursion fix: the bail guard when core already rendered the field, a single namespaced change.monitor handler, a single widget engine (never both), theme gating, and the selected-option build. Covers the previously untested changed lines (setup.php patch-coverage gate).
