Merge branch '4.4' into 5.1

* 4.4:
  [ErrorHandler] Return false directly and remove unused variable
  [OptionsResolver] Assert that the error type is valid in deprecations test
  [HttpClient] Allow bearer token with colon
  [Form] Fix custom formats deprecation with HTML5 widgets
  [Translator] Optional Intl dependency
  [Contracts][Translation] Optional Intl dependency
  [ErrorHandler] Escape JSON encoded log context
  update missing translations arabic
  [Yaml] simplify the test
  fix test by letting mock throw the actual expected exception

Author: fabpot

ErrorHandler.php

@@ -425,9 +425,8 @@ public function handleError(int $type, string $message, string $file, int $line)
         }
 
         if (!$type || (!$log && !$throw)) {
-            return !$silenced && $type && $log;
+            return false;
         }
-        $scope = $this->scopedErrors & $type;
 
         if (false !== strpos($message, "@anonymous\0")) {
             $logMessage = $this->parseAnonymousClass($message);

Resources/views/logs.html.php

@@ -35,7 +35,7 @@
             <td>
                 <?= $this->formatLogMessage($log['message'], $log['context']); ?>
                 <?php if ($log['context']) { ?>
-                <pre class="text-muted prewrap m-t-5"><?= json_encode($log['context'], \JSON_PRETTY_PRINT | \JSON_UNESCAPED_UNICODE | \JSON_UNESCAPED_SLASHES); ?></pre>
+                <pre class="text-muted prewrap m-t-5"><?= $this->escape(json_encode($log['context'], \JSON_PRETTY_PRINT | \JSON_UNESCAPED_UNICODE | \JSON_UNESCAPED_SLASHES)); ?></pre>
                 <?php } ?>
             </td>
         </tr>