TEST: disable preconnect_ctx_global test

[ikryukov]

What

Disable preconnect_ctx_global gtest tests.

Why ?

These tests use UCC_JOB_CTX_LOCAL mode where all processes are threads in the same OS process. During teardown, ~UccJob destroys contexts in parallel threads, each calling ucc_tl_ucp_close_eps with FLUSH mode. On shared memory transport (no IB), FLUSH has no timeout mechanism — it spins forever waiting for remote workers that are no longer being progressed. This causes CI to hang until the global timeout kills the job.

How ?

Added the gtest DISABLED_ prefix to both test names. The tests are still compiled but skipped at runtime.

related to #1273

[ikryukov]

/build

[greptile-apps]

Greptile Summary

This PR disables the team_create_multiple_preconnect_ctx_global gtest by prepending the standard GTest DISABLED_ prefix, preventing CI from hanging when the test spins forever during teardown on shared-memory transports. The change is minimal, correct, and consistent with the already-disabled DISABLED_team_create_multiple_preconnect_ctx_local test.

Minor note: The PR description states "These tests use UCC_JOB_CTX_LOCAL mode" as the root cause, but the newly disabled test (line 82) constructs its UccJob with UCC_JOB_CTX_GLOBAL. The underlying hang mechanism likely applies to both modes in the gtest thread-based environment, but the description could be slightly misleading for future readers trying to understand when it is safe to re-enable these tests.

Confidence Score: 5/5

• This PR is safe to merge — it only adds a GTest DISABLED_ prefix to one test name with no risk of regression.
• The change is a single token added to a test name, which is a well-understood GTest mechanism. It fixes a CI hang with no production code touched and no logic altered.
• No files require special attention.

Important Files Changed

Filename	Overview
test/gtest/core/test_team.cc	Single-line change adding the GTest DISABLED_ prefix to team_create_multiple_preconnect_ctx_global, preventing it from running automatically while keeping it compiled. Change is minimal and correct.

_{Last reviewed commit: 53fee1c}