DF_FIELD_TEMPLATES

Map of named TemplateRefs collected by <df-dynamic-form> from <ng-template dfTemplate="..."> children projected into its content. The directive selector is dfTemplate (see DfTemplate); the input value is the name addons reference via templateKey.

The template addon kind looks up its templateKey in this map at render time. Exposed as a Signal so projections can be added or removed reactively (e.g., when the host conditionally projects).

Provided at the form-component level (not root) so multiple <df-dynamic-form> instances on the same page have independent template scopes.