Orchestrator function code failures don't contain any information

When orchestrator function code directly throws an exception, the details of the exception are not logged. Instead, only the following is visible:

Unexpected failure in the task execution

This makes it very difficult to determine the actual cause of the failure.

Expected

Details of the exception should be included in the log message that gets logged by the Functions host.

首先跟踪 Java SDK 如何处理由 orchestrator 函数直接抛出的异常，以及“Unexpected failure in the task execution”消息记录在何处。确定现有的日志记录相关测试（如果有），并使用它们验证问题修复后异常详细信息会出现在 Functions host log 中。