Give Resource Providers a chance to load files.

File resolution only checks local file system. Resource providers may still
be able to load from a path even if it is not resolved.

PiperOrigin-RevId: 867534134
Change-Id: I802566136b965ad839393f56a4d4924dda2e1973

src/experimental/platform/helpers.cc

@@ -84,7 +84,7 @@ std::string ResolveFile(const std::string& filename,
       }
     }
   }
-  return "";
+  return filename;
 }
 
 void SaveToWebp(int width, int height, const std::byte* data,

src/experimental/studio/app.cc

@@ -145,14 +145,8 @@ void App::InitEmptyModel() {
 }
 
 void App::LoadModelFromFile(const std::string& filepath) {
-
   const std::string resolved_file =
       platform::ResolveFile(filepath, search_paths_);
-  if (resolved_file.empty()) {
-    SetLoadError("File not found: " + filepath);
-    return;
-  }
-
   model_holder_ = platform::ModelHolder::FromFile(resolved_file);
   if (model_holder_->ok()) {
     OnModelLoaded(filepath, kModelFromFile);