feature #54859 [Messenger] Don't mark `EnvelopeAwareExceptionInterfac…

…e` internal (valtzu)

This PR was merged into the 7.1 branch.

Discussion
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[Messenger] Don't mark `EnvelopeAwareExceptionInterface` internal

| Q             | A
| ------------- | ---
| Branch?       | 7.1
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| License       | MIT

As discussed [here](#54842 (comment)), let's expose `EnvelopeAwareExceptionInterface` to allow custom Messenger middlewares throw a custom exception without causing stamps from previous middlewares being dropped.

Commits
-------

7713fd1 Don't mark EnvelopeAwareExceptionInterface internal

src/Symfony/Component/Messenger/CHANGELOG.md

@@ -9,6 +9,7 @@ CHANGELOG
  * Add `--all` option to the `messenger:consume` command
  * Add parameter `$jitter` to `MultiplierRetryStrategy` in order to randomize delay and prevent the thundering herd effect
  * Add `SIGQUIT` signal among list of signals that gracefully shut down `messenger:consume` and `messenger:failed:retry` commands
+ * Add `EnvelopeAwareExceptionInterface` for exceptions thrown from middlewares to prevent stamps added by previous middlewares being dropped
 
 7.0
 ---

src/Symfony/Component/Messenger/Exception/EnvelopeAwareExceptionInterface.php

@@ -13,9 +13,6 @@
 
 use Symfony\Component\Messenger\Envelope;
 
-/**
- * @internal
- */
 interface EnvelopeAwareExceptionInterface
 {
     public function getEnvelope(): ?Envelope;