MC-5620: --convert-old-scripts mode does not convert indexes and constraints correctly

Author: fascinosum

dev/tests/setup-integration/_files/Magento/TestSetupDeclarationModule9/fixture/declarative_installer/disabling_tables.php

@@ -11,4 +11,4 @@
   `int_disabled_auto_increment` smallint(12) unsigned DEFAULT \'0\',
   UNIQUE KEY `AUTO_INCREMENT_TEST_INT_AUTO_INCREMENT_WITH_NULLABLE` (`int_auto_increment_with_nullable`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8'
-];
+];

dev/tests/setup-integration/testsuite/Magento/Developer/_files/SetupInstall/TestSetupDeclarationModule8/db_schema.xml

@@ -1,4 +1,10 @@
 <?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
 <schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">
     <table name="module8_test_main_table" resource="default" engine="innodb" comment="Main Test Table for Module8">

dev/tests/setup-integration/testsuite/Magento/Developer/_files/SetupInstall/TestSetupDeclarationModule9/db_schema.xml

@@ -1,4 +1,10 @@
 <?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
 <schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">
     <table name="module9_test_main_table" resource="default" engine="innodb" comment="Main Test Table for Module9">