[BUG] segfault when using UcpListener in TCP-only setup

[abellina]

This is to track: openucx/ucx#6755

In branch-0.6 if the spark.rapids.shuffle.ucx.listener.enabled=true internal configuration is turned on (it is off by default), we get a segfault in UCX 1.10.1 and in 1.11 so far (until openucx/ucx#6244 goes in).

In the mean time, the workaround described in openucx/ucx#6755 works:

spark.executorEnv.UCX_SOCKADDR_TLS_PRIORITY=tcp

We can close this issue after testing that we can remove this temporary workaround.

[abellina]

This is getting traction for 1.10.1 and the expectation is that UCX 1.10.1 will ship with a fix.

[abellina]

This is fixed with v1.10.1 with the merge of: openucx/ucx#6765