message: refactor(core): extract `icuSwitchCase`, `icuUpdateCase`, `removeNestedIcu`
  Extract `icuSwitchCase`, `icuUpdateCase`, `removeNestedIcu` into
  separate functions to align them with the `.debug` property text.
  PR Close
diff: @@ -102,7 +102,6 @@ export function i18nMutateOpCodesToString(
  case I18nMutateOpCode.ElementEnd:
  return `setPreviousOrParentTNode(tView.data[${ref}] as TNode)`;
  case I18nMutateOpCode.RemoveNestedIcu:
  - // FIXME(misko): refactor to have a real method in i18n.ts.
  return `removeNestedICU(${ref})`;
  }
  throw new Error('Unexpected OpCode');
  