feature symfony#52951 [Messenger] Add previous to the exception output (ToshY)

This PR was merged into the 7.2 branch.

Discussion
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[Messenger] Add previous to the exception output

| Q             | A
| ------------- | ---
| Branch?       | 7.1
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Issues        | Fix symfony#52921
| License       | MIT

Adds `previous` part of the exception to be displayed from `messenger:show:failed <id> -vv` command.

Commits
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5f63be6 Add previous to the exception output

Author: fabpot

src/Symfony/Component/Messenger/CHANGELOG.md

@@ -4,6 +4,7 @@ CHANGELOG
 7.2
 ---
 
+ * Add `$previous` to the exception output at the `messenger:failed:show` command
  * `WrappedExceptionsInterface` now extends PHP's `Throwable` interface
  * Add `#[AsMessage]` attribute with `$transport` parameter for message routing
  * Add `--format` option to the `messenger:stats` command

src/Symfony/Component/Messenger/Command/AbstractFailedMessagesCommand.php

@@ -182,6 +182,7 @@ private function createCloner(): ?ClonerInterface
                 Caster::PREFIX_VIRTUAL.'file' => $flattenException->getFile(),
                 Caster::PREFIX_VIRTUAL.'line' => $flattenException->getLine(),
                 Caster::PREFIX_VIRTUAL.'trace' => new TraceStub($flattenException->getTrace()),
+                Caster::PREFIX_VIRTUAL.'previous' => $flattenException->getPrevious(),
             ];
         }]);