[22441] Improve Blackbox TCP tests suite (backport #5467)

[mergify]

Description

The Blackbox TCP tests are run twice, once with IPv4 and once with IPv6 configurations. However, some of the tests do not properly utilize this architecture feature, leading to duplicated test runs. This PR fixes those tests by leveraging the test architecture to avoid running the same tests twice and reducing the number of tests.

@Mergifyio backport 3.1.x 3.0.x 2.14.x 2.10.x 2.6.x

Contributor Checklist

• Commit messages follow the project guidelines.

• The code follows the style guidelines of this project.

• Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally

• N/A Any new/modified methods have been properly documented using Doxygen.

• N/A Any new configuration API has an equivalent XML API (with the corresponding XSD extension)

• Changes are backport compatible: they do NOT break ABI nor change library core behavior.

• Changes are API compatible.

• N/A New feature has been added to the versions.md file (if applicable).

• N/A New feature has been documented/Current behavior is correctly described in the documentation.

• Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.
• N/A: If this is a critical bug fix, backports to the critical-only supported branches have been requested.
• Check CI results: changes do not issue any warning.
• Check CI results: failing tests are unrelated with the changes.

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This is an automatic backport of pull request #5467 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 0c799f4 has failed:

On branch mergify/bp/2.10.x/pr-5467
Your branch is up to date with 'origin/2.10.x'.

You are currently cherry-picking commit 0c799f4ca.
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Unmerged paths:
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	both modified:   test/blackbox/common/BlackboxTestsTransportTCP.cpp

no changes added to commit (use "git add" and/or "git commit -a")

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