Gracefully degrade tsh db ls
in case fetching roles fails.
#12318
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When accessing the remote clusters, a user may get a different set of roles and traits than in the original cluster. This can cause the code to fail to fetch the set of applicable roles, which breaks the entire command. As a stop-gap measure this PR changes that behavior to a graceful degradation where we don't calculate the available user names and show
(unknown)
instead.The complete fix is proposed in #12281, but it requires discussion about the proper way to fix the issue.
Fixes #12239
Caused by #10458