AC-13810: Customer Grid indexer does not work properly in Update by Schedule mode

Author: wip44850

app/code/Magento/Customer/etc/indexer.xml

@@ -7,7 +7,7 @@
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:framework:Indexer/etc/indexer.xsd">
-    <indexer id="customer_grid" view_id="customer_grid_flat" class="Magento\Framework\Indexer\Action\Entity" primary="customer">
+    <indexer id="customer_grid" view_id="customer_dummy" class="Magento\Framework\Indexer\Action\Entity" primary="customer">
         <title translate="true">Customer Grid</title>
         <description translate="true">Rebuild Customer grid index</description>
 

app/code/Magento/Customer/etc/mview.xml

@@ -6,7 +6,7 @@
  */
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Mview/etc/mview.xsd">
-    <view id="customer_grid_flat" class="Magento\Customer\Model\MviewAction" group="indexer">
+    <view id="customer_dummy" class="Magento\Customer\Model\MviewAction" group="indexer">
         <subscriptions>
             <table name="customer_entity" entity_column="entity_id" />
             <table name="customer_entity_datetime" entity_column="entity_id" />