feature #46752 [DependencyInjection] Use lazy-loading ghost object proxies out of the box (nicolas-grekas)

This PR was merged into the 6.2 branch.

Discussion
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[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](symfony/symfony#27697)), ProxyManager is still required (and the dep remains optional.)

But for most services, using `LazyGhostObjectTrait` just works \o/

Commits
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58a184826a [DependencyInjection] Use lazy-loading ghost object proxies out of the box

Author: nicolas-grekas

composer.json

@@ -21,7 +21,7 @@
         "ext-xml": "*",
         "symfony/cache": "^5.4|^6.0",
         "symfony/config": "^6.1",
-        "symfony/dependency-injection": "^6.1",
+        "symfony/dependency-injection": "^6.2",
         "symfony/deprecation-contracts": "^2.1|^3",
         "symfony/error-handler": "^6.1",
         "symfony/event-dispatcher": "^5.4|^6.0",