Draft: test: #1411074 Measure how many kernel tests can share a database

Francesco Placellarequested to merge
issue/drupal-1411074:1411074-everywhere into main

@/private/tmp/claude-501/-Users-plach-Work-www-drupal/0b04f33e-d0b0-42ba-ac7e-36d544a9fd87/scratchpad/mr-everywhere.md

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