Resolve #3372385 "11.x"

Closes #3372385

core/modules/ckeditor5/src/Controller/CKEditor5ImageController.php

@@ -193,7 +193,7 @@ public function upload(Request $request) {
     $file->setFilename($prepared_filename);
     $file->setMimeType($this->mimeTypeGuesser->guessMimeType($prepared_filename));
 
-    $file->setFileUri($file_uri);
+    $file->setFileUri($temp_file_path);
     $file->setSize(@filesize($temp_file_path));
 
     $violations = $this->validate($file, $validators);
@@ -208,6 +208,7 @@ public function upload(Request $request) {
       throw new HttpException(500, 'Temporary file could not be moved to file location');
     }
 
+    $file->setFileUri($file_uri);
     $file->save();
 
     $this->lock->release($lock_id);
@@ -257,6 +258,15 @@ protected function validate(FileInterface $file, array $validators) {
     // changes.
     $violations->filterByFieldAccess();
 
+    // Prevent validation of the URI field because the file validation handler
+    // expects it to have a schema, and it does not have one yet.
+    $fieldNames = $violations->getFieldNames();
+
+    // The filterByFields() method doesn't work with an empty array.
+    if (in_array('uri', $violations->getFieldNames(), TRUE)) {
+      $violations->filterByFields(array_diff($fieldNames, ['uri']));
+    }
+
     // Validate the file based on the field definition configuration.
     $violations->addAll($this->fileValidator->validate($file, $validators));