imagemanager / primitives > avoid copy of debug string (#53451)

Summary:
Pull Request resolved: #53451

Changelog: [Internal]

Reviewed By: rshest

Differential Revision: D80946627

fbshipit-source-id: c7604366f97b1b8336f3792d434d5873c810cec7

Author: christophpurrer

packages/react-native/ReactCommon/react/renderer/imagemanager/primitives.h

@@ -95,7 +95,7 @@ class ImageSource {
 
 #if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps(
-      const std::string prefix) const {
+      const std::string& prefix) const {
     ImageSource imageSource{};
 
     SharedDebugStringConvertibleList headersList;