[C++][Flight] TSan failures on Ubuntu 22.04

[pitrou]

Describe the bug, including details regarding any error messages, version, and platform.

Our TSan CI job currently runs on Ubuntu 20.04 with LLVM/Clang 11.

If you try to run it on Ubuntu 22.04 with LLVM/Clang 14, you get lots of errors in arrow-flight-test and arrow-flight-sql-test (I don't think it makes sense to copy the output here).

This can be reproduced using:

$ UBUNTU=22.04 archery docker run ubuntu-cpp-thread-sanitizer

Component(s)

C++, FlightRPC

[pitrou]

cc @lidavidm

There is of course no urgency, but at some point we'll probably want to bump the Ubuntu version on that job (it would also allow enabling S3, which doesn't seem to like the TSan version in Ubuntu 20.04).

[pitrou]

For the record, similar failures also occur with Ubuntu 24.04.
cc @felipecrv

[pitrou]

We now run arrow-s3fs-test successfully on our Ubuntu 24.04 TSan CI job, so this is obsolete.