message: ios: Don't evict gltfio materials between asset loads
diff: @@ -165,9 +165,9 @@ const float kSensitivity = 100.0f;
  if (!_asset) {
  return;
  }
  + _resourceLoader->evictResourceData();
  _scene->removeEntities(_asset->getEntities(), _asset->getEntityCount());
  _assetLoader->destroyAsset(_asset);
  - _materialProvider->destroyMaterials();
  _asset = nullptr;
  _animator = nullptr;
  }
  @@ -248,6 +248,7 @@ const float kSensitivity = 100.0f;
  delete _manipulator;
  + _materialProvider->destroyMaterials();
  delete _materialProvider;
  auto* ncm = _assetLoader->getNames();
  delete ncm;
  