CI Failure (KeyError: 'samples') in `CPUProfilerAdminAPITest.test_get_cpu_profile_with_override`

[oleiman]

https://buildkite.com/redpanda/redpanda/builds/45064#018daf88-57ac-4ba6-8598-bce02b094d94

Module: rptest.tests.cpu_profiler_admin_api_test
Class:  CPUProfilerAdminAPITest
Method: test_get_cpu_profile_with_override

test_id:    rptest.tests.cpu_profiler_admin_api_test.CPUProfilerAdminAPITest.test_get_cpu_profile_with_override
status:     FAIL
run time:   1 minute 3.667 seconds


    KeyError('samples')
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/ducktape/tests/runner_client.py", line 184, in _do_run
    data = self.run_test()
  File "/usr/local/lib/python3.10/dist-packages/ducktape/tests/runner_client.py", line 269, in run_test
    return self.test_context.function(self.test)
  File "/root/tests/rptest/services/cluster.py", line 104, in wrapped
    r = f(self, *args, **kwargs)
  File "/root/tests/rptest/tests/cpu_profiler_admin_api_test.py", line 73, in test_get_cpu_profile_with_override
    profile[0]["samples"]
KeyError: 'samples'