bug #49541 [Security] Remove @internal tag on `TraceableAuthentic…

…ator::getAuthenticator()` (florentdestremau)

This PR was merged into the 5.4 branch.

Discussion
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[Security] Remove ``@internal`` tag on `TraceableAuthenticator::getAuthenticator()`

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | See #49015
| License       | MIT

Following the [discussion](symfony/symfony#49015 (comment)) in #49015 I made this PR

Commits
-------

0a8ba937b7 Removed `@internal` tag on TraceableAuthenticator::getAuthenticator()

Authenticator/Debug/TraceableAuthenticator.php

@@ -100,9 +100,6 @@ public function isInteractive(): bool
         return $this->authenticator instanceof InteractiveAuthenticatorInterface && $this->authenticator->isInteractive();
     }
 
-    /**
-     * @internal
-     */
     public function getAuthenticator(): AuthenticatorInterface
     {
         return $this->authenticator;