bug #21788 [PhpUnitBridge] do not register the test listener twice (xabbuh)
bug #21788 [PhpUnitBridge] do not register the test listener twice (xabbuh)

This PR was merged into the 3.3-dev branch.

Discussion
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[PhpUnitBridge] do not register the test listener twice

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

If the listener is already configured through the PHPUnit config, there
is no need to also enable it explicitly in the test runner.

Commits
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f7bdfd068f do not register the test listener twice

symfony/phpunit-bridge