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

Dumper/PlantUmlDumper.php

@@ -217,11 +217,17 @@ private function getState(string $place, Definition $definition, Marking $markin
     private function getTransitionEscapedWithStyle(MetadataStoreInterface $workflowMetadata, Transition $transition, string $to): string
     {
         $to = $workflowMetadata->getMetadata('label', $transition) ?? $to;
-        $to = str_replace("\n", ' ', $to);
+        // Change new lines symbols to actual '\n' string,
+        // PUML will render them as new lines
+        $to = str_replace("\n", '\n', $to);
 
         $color = $workflowMetadata->getMetadata('color', $transition) ?? null;
 
         if (null !== $color) {
+            // Close and open <font> before and after every '\n' string,
+            // so that the style is applied properly on every line
+            $to = str_replace('\n', sprintf('</font>\n<font color=%1$s>', $color), $to);
+
             $to = sprintf(
                 '<font color=%1$s>%2$s</font>',
                 $color,

Tests/fixtures/puml/arrow/complex-state-machine-marking.puml

@@ -15,7 +15,7 @@ state "b"
 state "c" <<marked>>
 state "d"
 "a" --> "b": "t1"
-"d" -[#Red]-> "b": "<font color=Grey>My custom transition label 3</font>"
+"d" -[#Red]-> "b": "<font color=Grey>My custom transition</font>\n<font color=Grey>label 3</font>"
 "b" -[#Blue]-> "c": "t2"
 "b" --> "d": "t3"
 @enduml

Tests/fixtures/puml/arrow/complex-state-machine-nomarking.puml

@@ -15,7 +15,7 @@ state "b"
 state "c"
 state "d"
 "a" --> "b": "t1"
-"d" -[#Red]-> "b": "<font color=Grey>My custom transition label 3</font>"
+"d" -[#Red]-> "b": "<font color=Grey>My custom transition</font>\n<font color=Grey>label 3</font>"
 "b" -[#Blue]-> "c": "t2"
 "b" --> "d": "t3"
 @enduml