Consider adding error handling for ParseComputeOperationInfo

The call sites for `ParseComputeOperationInfo` do not provide the ability to propagate an error if `ParseComputeOperationInfo` detected one, such as a malformed URL. Consider enhancing the async get and async cancel request setting mechanism in `AsyncRestLongRunningOperation` to handle errors and refactor `ParseComputeOperationInfo` to return a `StatusOr`.

首先定位 ParseComputeOperationInfo 及其调用点，然后检查 AsyncRestLongRunningOperation 中 async get 和 async cancel 的请求设置路径。跟踪当前如何处理格式错误的 URL。完成的标准是错误可以通过这两条路径传播，并且 ParseComputeOperationInfo 返回 StatusOr。

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