PHPunit jobs fail with "Could not open input file: vendor/bin/dr" if the project has a custom composer bin directory
The phpunit jobs in the `d11-recipe` branch are failing with ``` Could not open input file: vendor/bin/dr ``` See [this scheduled job](https://git.drupalcode.org/project/gitlab_templates_downstream/-/jobs/10775808#L489) from Tuesday 7 July. This is running 11.4.1 and the same thing happens in 'next minor' 11.x and 'next major' main-dev. It runs OK in 'previous minor' 11.3.13 > Related to: https://www.drupal.org/project/drupal/issues/3609757
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