bug #53672 [FrameworkBundle] ConfigBuilderCacheWarmer should be non-optional (nicolas-grekas)

This PR was merged into the 6.4 branch.

Discussion
----------

[FrameworkBundle] `ConfigBuilderCacheWarmer` should be non-optional

| Q             | A
| ------------- | ---
| Branch?       | 6.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Issues        | Fix #53496
| License       | MIT

Replaces #53512

This became apparent after #50391, where the warmer is run only when compiling the container. Before, it didn't really matter.

Commits
-------

8bd2ff8855 [FrameworkBundle] ConfigBuilderCacheWarmer should be non-optional

Author: nicolas-grekas

CacheWarmer/ConfigBuilderCacheWarmer.php

@@ -85,6 +85,6 @@ private function dumpExtension(ExtensionInterface $extension, ConfigBuilderGener
 
     public function isOptional(): bool
     {
-        return true;
+        return false;
     }
 }