…r references in the container (nicolas-grekas)This PR was merged into the 6.3 branch.Discussion----------[DependencyInjection] Use WeakReference to break circular references in the container| Q             | A| ------------- | ---| Branch?       | 6.3| Bug fix?      | no| New feature?  | no| Deprecations? | no| Tickets       | -| License       | MIT| Doc PR        | -While working on#48461, I realized that we could break many circular loops involving the container by using a `WeakReference` to access it. This happens when we generate closures.Conceptually, we generate this at the moment:```php$internalClosure = function () { return $this->get('foo'); };```And we'd generate this with this PR:```php$containerRef = \WeakReference::create($this);$internalClosure = static function () use ($containerRef) { return $containerRef->get()->get('foo'); };```This should reduce the pressure on the garbage collector.Commits-------a3b7fca [DependencyInjection] Use WeakReference to break circular references in the container