[16277] Fix communication with asymmetric ignoreParticipantFlags (backport #3105)

[mergify]

This is an automatic backport of pull request #3105 done by Mergify.
Cherry-pick of 865702b has failed:

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Changes to be committed:
	modified:   src/cpp/rtps/builtin/discovery/participant/PDPSimple.cpp
	modified:   test/blackbox/common/BlackboxTestsDiscovery.cpp

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   src/cpp/rtps/builtin/discovery/participant/PDP.cpp
	both modified:   src/cpp/rtps/participant/RTPSParticipantImpl.cpp

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[MiguelCompany]

We will backport from #3111 instead