BF-39376 is an occurrence of a test inside jstests/core/query/explain/explain_shell_helpers.js failing because it sets a too low maxTimeMS value for an explain command.

The maxTimeMS value used by the test could be as low as 200ms, which may not be high enough to guarantee successful execution of an explain command on a slow build variant, e.g. a sharded cluster passthrough.

We should increase the maxTimeMS value used by this test, so that it has a much higher chance of succeeding and not being flaky.