[release-1.15] Make array when filters is nil

[matzew]

same as #958 but for 1.15 (so we have it in 1.35... do we ??)

[matzew]

/test 417-e2e-oncluster-test

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Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.

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Files with missing lines	Patch %	Lines
cmd/subscribe.go	25.00%	2 Missing and 1 partial ⚠️

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Additional details and impacted files

@@               Coverage Diff                @@
##             release-v1.15     #959   +/-   ##
================================================
  Coverage                 ?   65.09%           
================================================
  Files                    ?      129           
  Lines                    ?    15399           
  Branches                 ?        0           
================================================
  Hits                     ?    10024           
  Misses                   ?     4406           
  Partials                 ?      969           

Flag	Coverage Δ
e2e-test	36.93% <0.00%> (?)
e2e-test-runtime-go	26.50% <0.00%> (?)
e2e-test-runtime-node	25.91% <0.00%> (?)
e2e-test-runtime-python	25.91% <0.00%> (?)
e2e-test-runtime-quarkus	26.06% <0.00%> (?)
e2e-test-runtime-rust	25.05% <0.00%> (?)
e2e-test-runtime-springboot	25.11% <0.00%> (?)
e2e-test-runtime-typescript	26.02% <0.00%> (?)
integration-tests	51.94% <25.00%> (?)
unit-tests	50.60% <25.00%> (?)

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[openshift-ci]

@matzew: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/418-e2e-oncluster-test	5239478	link	true	/test 418-e2e-oncluster-test

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[matejvasek]

/test 418-e2e-oncluster-test

[matejvasek]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: matejvasek, matzew

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