mac release build

com.unity.uiwidgets/Runtime/Plugins/osx/libUIWidgets.dylib.meta

 fileFormatVersion: 2
-guid: 2195660b00ec74b3dbfc33fd6cbd9724
+guid: 70f8ceca890db46af80df52d443eb11c
 PluginImporter:
   externalObjects: {}
   serializedVersion: 2

engine/Build.bee.cs

         );
         np.Libraries.Add(IsMac, c =>
         {
+            if(c.CodeGen == CodeGen.Debug){
+                return new PrecompiledLibrary[]{
+                    new StaticLibrary(flutterRoot+"/out/host_debug_unopt/obj/flutter/third_party/txt/libtxt_lib.a"),
+                };
+            } else {
+                return new PrecompiledLibrary[]{
+                    new StaticLibrary(flutterRoot+"/out/host_release/obj/flutter/third_party/txt/libtxt_lib.a"),
+                };
+            }
+        });
+        np.Libraries.Add(IsMac, c =>
+        {
-                new StaticLibrary(flutterRoot+"/out/host_debug_unopt/obj/flutter/third_party/txt/libtxt_lib.a"),
                 new SystemFramework("Foundation"),
                 new SystemFramework("ApplicationServices"),
                 new SystemFramework("OpenGL"),