[HttpKernel] Don't reset on shutdown but in FrameworkBundle/Test/KernelTestCase #16609
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While trying to migrate Blackfire to 2.8-beta, I found this BC-break: by resetting the container on kernel shut-down, functional tests are broken when they need to use the container after a call to
$this->client->request()
. Broken because e.g . the session or the profiler state is lost between consecutive requests in the same test, and because a call to $container->get('kernel') throws a synthetic-related exception.This PR fixes the BC-break by reverting to the <=2.7 behavior (not resetting the container on kernel shut-down), and moving resetting to the KernelTestCase.