Merge branch '5.4' into 6.2

* 5.4:
  Fix some Composer keywords
  [FrameworkBundle] Rename limiter’s `strategy` to `policy` in XSD
  [VarDumper] Fixed dumping of CutStub
  Fix test
  Change limit argument from string to integer.
  [Messenger] Fix `evaluate()` calls in `WorkerTest`
  [Mailer] STDOUT blocks infinitely under Windows when STDERR is filled

Author: fabpot

Tests/Store/DoctrineDbalStoreTest.php

@@ -153,14 +153,15 @@ public function testTableCreationInTransactionNotSupported()
         $conn->expects($this->atLeast(2))
             ->method('executeStatement')
             ->willReturnCallback(function ($sql) use (&$series) {
-                [$constraint, $return] = array_shift($series);
-                $constraint->evaluate($sql);
+                if ([$constraint, $return] = array_shift($series)) {
+                    $constraint->evaluate($sql);
+                }
 
                 if ($return instanceof \Exception) {
                     throw $return;
                 }
 
-                return $return;
+                return $return ?? 1;
             })
         ;
 
@@ -194,14 +195,15 @@ public function testCreatesTableOutsideTransaction()
         $conn->expects($this->atLeast(3))
             ->method('executeStatement')
             ->willReturnCallback(function ($sql) use (&$series) {
-                [$constraint, $return] = array_shift($series);
-                $constraint->evaluate($sql);
+                if ([$constraint, $return] = array_shift($series)) {
+                    $constraint->evaluate($sql);
+                }
 
                 if ($return instanceof \Exception) {
                     throw $return;
                 }
 
-                return $return;
+                return $return ?? 1;
             })
         ;