entc/gen: expose config on generated filters (#2473)

entc/gen/template/dialect/sql/entql.tmpl

@@ -82,7 +82,7 @@ type predicateAdder interface {
 
 	// Filter returns a Filter implementation to apply filters on the {{ $builder }} builder.
 	func ({{ $receiver }} *{{ $builder }}) Filter() *{{ $filter }} {
-		return &{{ $filter }}{ {{ $receiver }} }
+		return &{{ $filter }}{ {{ $receiver }}.config, {{ $receiver}} }
 	}
 
 	// addPredicate implements the predicateAdder interface.
@@ -92,11 +92,12 @@ type predicateAdder interface {
 
 	// Filter returns an entql.Where implementation to apply filters on the {{ $mutation }} builder.
 	func (m *{{ $mutation }}) Filter() *{{ $filter }} {
-		return &{{ $filter }}{m}
+		return &{{ $filter }}{m.config, m}
 	}
 
 	// {{ $filter }} provides a generic filtering capability at runtime for {{ $builder }}.
 	type {{ $filter }} struct {
+		config
 		predicateAdder
 	}