Fixed 'img' tags, removed utf8_encode since it's deprecated and readded echoRaw from textarea widget

src/Form/UiTextarea.php

@@ -25,9 +25,15 @@ class UiTextarea extends UiInput {
 
         return "<?php echo ( new \\" . static::class . "(raw: $raw) )->buildHtml($arguments) ?>";
     }
-
     protected function setValue($value) : void
     {
         $this->echoRaw ? $this->html($value) : $this->text($value);
     }
+
+    protected function echoRaw(bool $value) : self
+    {
+        $this->echoRaw = $value;
+
+        return $this;
+    }
 }