Change the behavior of takeTask() so that it returns on timeout.

[todo]

https://github.com/nivelle/java-all/blob/fd3a512b1936a65bda4fe045a2e1e25fc4df7d5c/"b/learn-notes/netty/netty\346\240\270\345\277\203\346\265\201\347\250\213\346\272\220\347\240\201.md"#L1879-L1884

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This issue was generated by todo based on a TODO comment in fd3a512. It's been assigned to @undefined because they committed the code.