message: feat(loader): Sync loader with Sentry template
diff: var _currentScriptTag = _document.scripts[0];
  var _newScriptTag = _document.createElement(_script);
  _newScriptTag.src = _sdkBundleUrl;
  - _newScriptTag.setAttribute('crossorigin', 'anonymous');
  + _newScriptTag.crossOrigin = 'anonymous';
  // Once our SDK is loaded
  _newScriptTag.addEventListener('load', function() {
  