Wires every slot query through the documented three-stage cascade.
Must be called inside an Angular injection context (the helper resolves
CNGX_FILTER_BUILDER_CONFIG lazily and the contentChild signals were
already created in the caller's context).
The default factory is registered behind
CNGX_FILTER_BUILDER_TEMPLATE_REGISTRY_FACTORY so consumers can wrap
the resolution path (telemetry, dynamic theme swapping, etc.) without
forking the component.