Merge branch '5.4' into 6.2

* 5.4:
  fix style of label containing new lines in PUML dump
  [TwigBridge] Allow floats in html5 input type number field
  [Translation] Handle the translation of empty strings
  [VarDumper] Fix error when reflected class has default Enum parameter in constructor
  [FrameworkBundle] Fix denyAccessUnlessGranted for mixed attributes
  [Validator] Fix translation of AtLeastOneOf constraint message
  [Validator] Sync IBAN formats with Swift IBAN registry
  [String] Use same alphabet for ByteString::fromRandom tests
  Fix phpdocs in components

Author: nicolas-grekas

Extension/Core/Type/NumberType.php

@@ -41,6 +41,10 @@ public function buildView(FormView $view, FormInterface $form, array $options)
     {
         if ($options['html5']) {
             $view->vars['type'] = 'number';
+
+            if (!isset($view->vars['attr']['step'])) {
+                $view->vars['attr']['step'] = 'any';
+            }
         } else {
             $view->vars['attr']['inputmode'] = 0 === $options['scale'] ? 'numeric' : 'decimal';
         }

Tests/AbstractLayoutTestCase.php

@@ -1879,6 +1879,26 @@ public function testRenderNumberWithHtml5NumberType()
         $this->assertWidgetMatchesXpath($form->createView(), [],
             '/input
     [@type="number"]
+    [@step="any"]
+    [@name="name"]
+    [@value="1234.56"]
+'
+        );
+    }
+
+    public function testRenderNumberWithHtml5NumberTypeAndStepAttribute()
+    {
+        $this->requiresFeatureSet(403);
+
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\NumberType', 1234.56, [
+            'html5' => true,
+            'attr' => ['step' => '0.1'],
+        ]);
+
+        $this->assertWidgetMatchesXpath($form->createView(), [],
+            '/input
+    [@type="number"]
+    [@step="0.1"]
     [@name="name"]
     [@value="1234.56"]
 '