add a migration script to trigger a reprocessing of the entities

Signed-off-by: Mengnan Gong <namco1992@gmail.com>

.changeset/dull-gorillas-sing.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog-backend': patch
+---
+
+The previous migration that adds the `search.original_value` column may leave some of the entities not updated. Add a migration script to trigger a reprocessing of the entities.

plugins/catalog-backend/migrations/20230125085746_trigger_reprocessing.js

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2022 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// @ts-check
+
+/**
+ * @param { import("knex").Knex } knex
+ */
+exports.up = async function up(knex) {
+  await knex('final_entities').update({ hash: '' });
+  await knex('refresh_state').update({
+    result_hash: '',
+    next_update_at: knex.fn.now(),
+  });
+};
+
+/**
+ * @param { import("knex").Knex } _knex
+ */
+exports.down = async function down(_knex) {};