fix(api): revert changes regarding Handler

pkg/api/router.go

@@ -40,6 +40,23 @@ func (s *Service) Mount() {
 	s.mountBusinessDebug()
 	s.mountAPI()
 
+	s.Handler = web.ChainHandlers(
+		httpaccess.NewHTTPAccessLogHandler(s.logger, s.tracer, "api access"),
+		handlers.CompressHandler,
+		s.corsHandler,
+		web.NoCacheHeadersHandler,
+		web.FinalHandler(router),
+	)
+}
+
+// EnableFullAPI will enable all available endpoints, because some endpoints are not available during syncing.
+func (s *Service) EnableFullAPI() {
+	if s == nil {
+		return
+	}
+
+	s.fullAPIEnabled = true
+
 	compressHandler := func(h http.Handler) http.Handler {
 		downloadEndpoints := []string{
 			"/bzz",
@@ -86,15 +103,6 @@ func (s *Service) Mount() {
 	)
 }
 
-// EnableFullAPI will enable all available endpoints, because some endpoints are not available during syncing.
-func (s *Service) EnableFullAPI() {
-	if s == nil {
-		return
-	}
-
-	s.fullAPIEnabled = true
-}
-
 func (s *Service) mountTechnicalDebug() {
 	s.router.Handle("/node", jsonhttp.MethodHandler{
 		"GET": http.HandlerFunc(s.nodeGetHandler),