feat: remove unnecessary filter creations

[Cali0707]

The filters field is implicitly an AllFilter, which means that even if a user only creates a single filter two filters will get created. Similarly, if for some reason a user creates an all filter or any filter with only a single subfilter, we should not create the extra "wrapper" filter.

Proposed Changes

• Only create an all or any filter if the filters list is > 1

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Cali0707

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[Cali0707]

/cc @pierDipi @Leo6Leo

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.25%. Comparing base (961961c) to head (949ac6e).
Report is 26 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4014   +/-   ##
=======================================
  Coverage   48.25%   48.25%           
=======================================
  Files         246      246           
  Lines       14540    14540           
=======================================
  Hits         7016     7016           
  Misses       6817     6817           
  Partials      707      707           

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[Cali0707]

/retest-required

[Cali0707]

/cc @creydr @Leo6Leo

[creydr]

/lgtm

[pierDipi]

/retest

[creydr]

/test upgrade-tests

[creydr]

/test upgrade-tests

[creydr]

/test upgrade-tests

[creydr]

/retest

[knative-prow]

@Cali0707: 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
upgrade-tests_eventing-kafka-broker_main	949ac6e	link	true	/test upgrade-tests

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[knative-prow-robot]

PR needs rebase.

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[creydr]

@Cali0707 can you rebase this? It seems I can't push to your branch to rebase on my own :/

Changes should be like creydr@216fe89