Issue #3008292 by phenaproxima, dimitriskr: ImageItem::getUploadValidators()...

Issue #3008292 by phenaproxima, dimitriskr: ImageItem::getUploadValidators() should be the source of truth for validating uploaded images

Closes #3008292

core/modules/file/src/Plugin/Field/FieldType/FileItem.php

@@ -345,7 +345,7 @@ protected static function doGetUploadLocation(array $settings, $data = []) {
    *   element's '#upload_validators' property.
    */
   public function getUploadValidators() {
-    return $this->getFileUploadValidators($this->getSettings());
+    return $this->getFileUploadValidators($this->getFieldDefinition());
   }
 
   /**