Merge pull request #1215 from notargs/feature/add_await_caller

LoadTexturesAsync・LoadMaterialsAsyncへのAwaitCallerの受け渡しが漏れていた問題を修正

Assets/UniGLTF/Runtime/UniGLTF/IO/ImporterContext.cs

@@ -105,12 +105,12 @@ namespace UniGLTF
 
             using (MeasureTime("LoadTextures"))
             {
-                await LoadTexturesAsync();
+                await LoadTexturesAsync(awaitCaller);
             }
 
             using (MeasureTime("LoadMaterials"))
             {
-                await LoadMaterialsAsync();
+                await LoadMaterialsAsync(awaitCaller);
             }
 
             await LoadGeometryAsync(awaitCaller, MeasureTime);