fix: encoding form decode field mask from well-know (#2285)

Co-authored-by: Astone <caliburn_marco@163.com>

encoding/form/proto_decode.go

@@ -12,11 +12,11 @@ import (
 	"google.golang.org/protobuf/encoding/protojson"
 	"google.golang.org/protobuf/types/known/structpb"
 
-	"google.golang.org/genproto/protobuf/field_mask"
 	"google.golang.org/protobuf/proto"
 	"google.golang.org/protobuf/reflect/protoreflect"
 	"google.golang.org/protobuf/reflect/protoregistry"
 	"google.golang.org/protobuf/types/known/durationpb"
+	"google.golang.org/protobuf/types/known/fieldmaskpb"
 	"google.golang.org/protobuf/types/known/timestamppb"
 	"google.golang.org/protobuf/types/known/wrapperspb"
 )
@@ -289,7 +289,7 @@ func parseMessage(md protoreflect.MessageDescriptor, value string) (protoreflect
 		}
 		msg = wrapperspb.Bytes(v)
 	case "google.protobuf.FieldMask":
-		fm := &field_mask.FieldMask{}
+		fm := &fieldmaskpb.FieldMask{}
 		for _, fv := range strings.Split(value, ",") {
 			fm.Paths = append(fm.Paths, jsonSnakeCase(fv))
 		}