…zy loading services (nicolas-grekas)This PR was merged into the 6.2 branch.Discussion----------[DependencyInjection] Allow using ghost objects for lazy loading services| Q             | A| ------------- | ---| Branch?       | 6.2| Bug fix?      | no| New feature?  | yes| Deprecations? | no| Tickets       | -| License       | MIT| Doc PR        | -This PR is a subset of#46458 that contains the needed API changes to allow lazy-proxy dumpers to use ghost objects.The main change of this PR is adding argument `bool &$asGhostObject = null` to LazyProxy's `DumperInterface`.The rest is the consequence of that new capability.The changes on ProxyManager are all minor: refactoring the code to make it more flexible (as proved by#46458) and adding the new argument but not doing anything with it (yet.)Commits-------2997693 [DependencyInjection] Allow using ghost objects for lazy loading services

…oxies out of the box (nicolas-grekas)This PR was merged into the 6.2 branch.Discussion----------[DependencyInjection] Use lazy-loading ghost object proxies out of the box| Q             | A| ------------- | ---| Branch?       | 6.2| Bug fix?      | no| New feature?  | yes| Deprecations? | no| Tickets       |Fix#35345| License       | MIT| Doc PR        | -This PR builds on#46751. It also replaces#46458.Instead of using ProxyManager to make lazy services actually lazy, using `LazyGhostObjectTrait` from#46751 allows doing so *out of the box* - aka without the need to install any optional dependencies.When a virtual proxy is required (typically when using [the `proxy` tag](#27697)), ProxyManager is still required (and the dep remains optional.)But for most services, using `LazyGhostObjectTrait` just works \o/Commits-------58a1848 [DependencyInjection] Use lazy-loading ghost object proxies out of the box