CI Failure (TimeoutError) in `NodesDecommissioningTest.test_learner_gap_metrics`

[vbotbuildovich]

https://buildkite.com/redpanda/redpanda/builds/49980
https://buildkite.com/redpanda/redpanda/builds/49995
https://buildkite.com/redpanda/redpanda/builds/49996
https://buildkite.com/redpanda/redpanda/builds/50034
https://buildkite.com/redpanda/redpanda/builds/50048
https://buildkite.com/redpanda/redpanda/builds/50047

Module: rptest.tests.nodes_decommissioning_test
Class: NodesDecommissioningTest
Method: test_learner_gap_metrics

test_id:    NodesDecommissioningTest.test_learner_gap_metrics
status:     FAIL
run time:   129.669 seconds

TimeoutError('')
Traceback (most recent call last):
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 184, in _do_run
    data = self.run_test()
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 276, in run_test
    return self.test_context.function(self.test)
  File "/root/tests/rptest/services/cluster.py", line 105, in wrapped
    r = f(self, *args, **kwargs)
  File "/root/tests/rptest/tests/nodes_decommissioning_test.py", line 470, in test_learner_gap_metrics
    wait_until(lambda: learner_gap_reported(to_decommission_id),
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/utils/util.py", line 57, in wait_until
    raise TimeoutError(err_msg() if callable(err_msg) else err_msg) from last_exception
ducktape.errors.TimeoutError

JIRA Link: CORE-4147