InsensitiveCaseArray : correction initialisation tableau existant

src/ArrayClasses/ImmutableInsensitiveCaseArrayClass.php

@@ -7,10 +7,24 @@ namespace jrosset\ArrayClasses;
  */
 class ImmutableInsensitiveCaseArrayClass implements IImmutableArrayClass {
     use TImmutableInternalArray {
+        __construct as private __construct__TImmutableInternalArray;
         has as private has__TImmutableInternalArray;
         get as private get__TImmutableInternalArray;
     }
 
+    /**
+     * @inheritDoc
+     */
+    public function __construct ($initial = null, bool $throwsForNonExistentElement = true) {
+        $this->__construct__TImmutableInternalArray($initial, $throwsForNonExistentElement);
+
+        $arrayNew = [];
+        foreach ($this->array as $key => $value) {
+            $arrayNew[mb_strtolower($key)] = $value;
+        }
+        $this->array = $arrayNew;
+    }
+
     /**
      * @inheritDoc
      */