build(deps): bump github.com/grpc-ecosystem/grpc-gateway/v2

Bumps [github.com/grpc-ecosystem/grpc-gateway/v2](https://github.com/grpc-ecosystem/grpc-gateway) from 2.27.2 to 2.27.3.
- [Release notes](https://github.com/grpc-ecosystem/grpc-gateway/releases)
- [Changelog](https://github.com/grpc-ecosystem/grpc-gateway/blob/main/.goreleaser.yml)
- [Commits](https://github.com/grpc-ecosystem/grpc-gateway/compare/v2.27.2...v2.27.3)

---
updated-dependencies:
- dependency-name: github.com/grpc-ecosystem/grpc-gateway/v2
  dependency-version: 2.27.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/BUILD.bazel

@@ -27,6 +27,7 @@ go_library(
         "//internal/httprule",
         "//utilities",
         "@org_golang_google_genproto_googleapis_api//httpbody",
+        "@org_golang_google_grpc//:grpc",
         "@org_golang_google_grpc//codes",
         "@org_golang_google_grpc//grpclog",
         "@org_golang_google_grpc//health/grpc_health_v1",

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/context.go

@@ -201,13 +201,13 @@ func annotateContext(ctx context.Context, mux *ServeMux, req *http.Request, rpcM
 	if timeout != 0 {
 		ctx, _ = context.WithTimeout(ctx, timeout)
 	}
-	if len(pairs) == 0 {
-		return ctx, nil, nil
-	}
 	md := metadata.Pairs(pairs...)
 	for _, mda := range mux.metadataAnnotators {
 		md = metadata.Join(md, mda(ctx, req))
 	}
+	if len(md) == 0 {
+		return ctx, nil, nil
+	}
 	return ctx, md, nil
 }
 

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/marshal_jsonpb.go

@@ -66,7 +66,7 @@ func (j *JSONPb) marshalTo(w io.Writer, v interface{}) error {
 
 var (
 	// protoMessageType is stored to prevent constant lookup of the same type at runtime.
-	protoMessageType = reflect.TypeOf((*proto.Message)(nil)).Elem()
+	protoMessageType = reflect.TypeFor[proto.Message]()
 )
 
 // marshalNonProto marshals a non-message field of a protobuf message.
@@ -325,9 +325,9 @@ type protoEnum interface {
 	EnumDescriptor() ([]byte, []int)
 }
 
-var typeProtoEnum = reflect.TypeOf((*protoEnum)(nil)).Elem()
+var typeProtoEnum = reflect.TypeFor[protoEnum]()
 
-var typeProtoMessage = reflect.TypeOf((*proto.Message)(nil)).Elem()
+var typeProtoMessage = reflect.TypeFor[proto.Message]()
 
 // Delimiter for newline encoded JSON streams.
 func (j *JSONPb) Delimiter() []byte {

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/mux.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 
 	"github.com/grpc-ecosystem/grpc-gateway/v2/internal/httprule"
+	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/grpclog"
 	"google.golang.org/grpc/health/grpc_health_v1"
@@ -281,15 +282,22 @@ func WithHealthEndpointAt(healthCheckClient grpc_health_v1.HealthClient, endpoin
 			http.MethodGet, endpointPath, func(w http.ResponseWriter, r *http.Request, _ map[string]string,
 			) {
 				_, outboundMarshaler := MarshalerForRequest(s, r)
-
-				resp, err := healthCheckClient.Check(r.Context(), &grpc_health_v1.HealthCheckRequest{
-					Service: r.URL.Query().Get("service"),
-				})
+				annotatedContext, err := AnnotateContext(r.Context(), s, r, grpc_health_v1.Health_Check_FullMethodName, WithHTTPPathPattern(endpointPath))
 				if err != nil {
 					s.errorHandler(r.Context(), s, outboundMarshaler, w, r, err)
 					return
 				}
 
+				var md ServerMetadata
+				resp, err := healthCheckClient.Check(annotatedContext, &grpc_health_v1.HealthCheckRequest{
+					Service: r.URL.Query().Get("service"),
+				}, grpc.Header(&md.HeaderMD), grpc.Trailer(&md.TrailerMD))
+				annotatedContext = NewServerMetadataContext(annotatedContext, md)
+				if err != nil {
+					s.errorHandler(annotatedContext, s, outboundMarshaler, w, r, err)
+					return
+				}
+
 				w.Header().Set("Content-Type", "application/json")
 
 				if resp.GetStatus() != grpc_health_v1.HealthCheckResponse_SERVING {
@@ -300,7 +308,7 @@ func WithHealthEndpointAt(healthCheckClient grpc_health_v1.HealthClient, endpoin
 						err = status.Error(codes.NotFound, resp.String())
 					}
 
-					s.errorHandler(r.Context(), s, outboundMarshaler, w, r, err)
+					s.errorHandler(annotatedContext, s, outboundMarshaler, w, r, err)
 					return
 				}