Merge branch '7.4' into 8.0

* 7.4:
  [JsonPath] Use composer packages for JsonPath compliance test suite
  Fix negative delays with AMQP messenger transport
  [TwigBundle] Align TemplateIterator handling of @! original bundle templates with TwigExtension
  [AssetMapper] Batch concurrent requests to prevent flooding jsdelivr
  [HttpFoundation][Cache] Fix VARBINARY columns on sqlsrv
  [Cache] Fix calling the callback wrapper for ChainAdapter
  [Routing] Fix simple parameter mappings in routes
  [Process] Fix dealing with broken stdin pipes

Author: nicolas-grekas

Route.php

@@ -426,7 +426,7 @@ private function extractInlineDefaultsAndRequirements(string $pattern): string
                 $this->setRequirement($m[2], substr($m[6], 1, -1));
             }
             if (isset($m[4][0])) {
-                $mapping[$m[2]] = isset($m[5][0]) ? [$m[4], substr($m[5], 1)] : $mapping[$m[2]] = [$m[4], $m[2]];
+                $mapping[$m[2]] = isset($m[5][0]) ? [$m[4], substr($m[5], 1)] : $m[4];
             }
 
             return '{'.$m[1].$m[2].'}';

Tests/Matcher/UrlMatcherTest.php

@@ -1046,10 +1046,7 @@ public function testMapping()
             '_route' => 'a',
             'slug' => 'vienna-2024',
             '_route_mapping' => [
-                'slug' => [
-                    'conference',
-                    'slug',
-                ],
+                'slug' => 'conference',
             ],
         ];
         $this->assertEquals($expected, $matcher->match('/conference/vienna-2024'));