Update src/env.h

Co-authored-by: bl-ue <54780737+bl-ue@users.noreply.github.com>

Author: codebytere

src/env.h

@@ -1113,7 +1113,7 @@ class Environment : public MemoryRetainer {
   void PrintSyncTrace() const;
   inline void set_trace_sync_io(bool value);
 
-  inline void set_unhandled_rejections_mode(const std::string& mode) const;
+  inline void set_unhandled_rejections_mode(const std::string& mode);
   inline std::string unhandled_rejections_mode() const;
 
   inline void set_force_context_aware(bool value);