logictest: mixed-version testserver tests are too flaky #92637
Description
According to the stats on https://teamcity.cockroachdb.com/test/2967917534255592156?currentProjectId=Cockroach_Ci_TestsGcpLinuxX8664BigVm&branch=&expandTestHistoryChartSection=true, 98 of the last 255 runs failed. The failure generally is:
Failed
=== RUN TestLogic_testserver_test_22_1_22_2
test_log_scope.go:161: test logs captured to: /artifacts/tmp/_tmp/a0cd2ed7268f1ad03abb8f1d57f5fcc9/logTestLogic_testserver_test_22_1_22_24214293579
test_log_scope.go:79: use -show-logs to present logs inline
logic.go:3045:
/home/roach/.cache/bazel/_bazel_roach/c5a4e7d36696d9cd970af2045211a7df/sandbox/processwrapper-sandbox/7181/execroot/com_github_cockroachdb_cockroach/bazel-out/k8-fastbuild/bin/pkg/sql/logictest/tests/cockroach-go-testserver-22.1-22.2/cockroach-go-testserver-22_1-22_2_test_/cockroach-go-testserver-22_1-22_2_test.runfiles/com_github_cockroachdb_cockroach/pkg/sql/logictest/testdata/logic_test/testserver_test_22.1_22.2:13: error while processing
logic.go:3045: init did not finish for node 1
Jira issue: CRDB-21892