bug #17049 Fix the logout path when not using the router (stof)

This PR was merged into the 2.7 branch.

Discussion
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Fix the logout path when not using the router

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #17029
| License       | MIT
| Doc PR        | n/a

This needs to use the base url, not the base path, so that it goes through the front controller when not using url rewriting.

Similar to #17048, but in the new code location

Commits
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542b877 Fix the logout path when not using the router

src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php

@@ -121,7 +121,7 @@ private function generateLogoutUrl($key, $referenceType)
 
             $request = $this->requestStack->getCurrentRequest();
 
-            $url = UrlGeneratorInterface::ABSOLUTE_URL === $referenceType ? $request->getUriForPath($logoutPath) : $request->getBasePath().$logoutPath;
+            $url = UrlGeneratorInterface::ABSOLUTE_URL === $referenceType ? $request->getUriForPath($logoutPath) : $request->getBaseUrl().$logoutPath;
 
             if (!empty($parameters)) {
                 $url .= '?'.http_build_query($parameters);