Merge branch '5.4' into 6.0

* 5.4:
  fix SQLSRV throws for method_exists()
  [HttpKernel] Add basic support for language negotiation
  [Messenger] Add a middleware to log when transaction has been left open
  [HttpClient] Add method to set response factory in mock client
  Move array_merge calls out of loops to improve performance
  Remove references to DBALException
  [VarDumper] Fix handling of "new" in initializers on PHP 8.1

Author: derrabus

Form.php

@@ -124,11 +124,11 @@ public function getPhpValues(): array
             if (!empty($qs)) {
                 parse_str($qs, $expandedValue);
                 $varName = substr($name, 0, \strlen(key($expandedValue)));
-                $values = array_replace_recursive($values, [$varName => current($expandedValue)]);
+                $values[] = [$varName => current($expandedValue)];
             }
         }
 
-        return $values;
+        return array_replace_recursive([], ...$values);
     }
 
     /**
@@ -161,11 +161,11 @@ function (&$value, $key) {
 
                 reset($expandedValue);
 
-                $values = array_replace_recursive($values, [$varName => current($expandedValue)]);
+                $values[] = [$varName => current($expandedValue)];
             }
         }
 
-        return $values;
+        return array_replace_recursive([], ...$values);
     }
 
     /**