bug #32365 [DI] fix processing of regular parameter bags by MergeExtensionConfigurationPass (nicolas-grekas)

This PR was merged into the 3.4 branch.

Discussion
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[DI] fix processing of regular parameter bags by MergeExtensionConfigurationPass

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Spotted in and needed by #32294

Commits
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b06d0003a3 [DI] fix processing of regular parameter bags by MergeExtensionConfigurationPass

Author: nicolas-grekas

Compiler/MergeExtensionConfigurationPass.php

@@ -186,6 +186,10 @@ public function resolveEnvPlaceholders($value, $format = null, array &$usedEnvs
         $bag = $this->getParameterBag();
         $value = $bag->resolveValue($value);
 
+        if (!$bag instanceof EnvPlaceholderParameterBag) {
+            return parent::resolveEnvPlaceholders($value, $format, $usedEnvs);
+        }
+
         foreach ($bag->getEnvPlaceholders() as $env => $placeholders) {
             if (false === strpos($env, ':')) {
                 continue;