bug #50115 [FrameworkBundle] Make service edges unique (rmikalkenas)

This PR was merged into the 6.2 branch.

Discussion
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[FrameworkBundle] Make service edges unique

| Q             | A
| ------------- | ---
| Branch?       | 6.2
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | -
| License       | MIT
| Doc PR        | -

While describing some services it might result to non unique list of usages. This PR removes duplicate values

![image](https://user-images.githubusercontent.com/14221532/233794805-d9afd12c-668b-496d-a21c-783e3aa07cfd.png)

Commits
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6252aeacc0 [FrameworkBundle] Make service edges unique

Author: nicolas-grekas

Console/Descriptor/Descriptor.php

@@ -343,9 +343,9 @@ private function getContainerEnvVars(ContainerBuilder $container): array
     protected function getServiceEdges(ContainerBuilder $builder, string $serviceId): array
     {
         try {
-            return array_map(function (ServiceReferenceGraphEdge $edge) {
+            return array_values(array_unique(array_map(function (ServiceReferenceGraphEdge $edge) {
                 return $edge->getSourceNode()->getId();
-            }, $builder->getCompiler()->getServiceReferenceGraph()->getNode($serviceId)->getInEdges());
+            }, $builder->getCompiler()->getServiceReferenceGraph()->getNode($serviceId)->getInEdges())));
         } catch (InvalidArgumentException $exception) {
             return [];
         }