ENGCOM-5442: [2.3] Improve Database Media Storage Configuration settings usability #23710

 - Merge Pull Request #23710 from gwharton/magento2:2.3-develop-dbcheckbox
 - Merged commits:
   1. 85e5375
   2. a974261

Author: magento-engcom-team

app/code/Magento/MediaStorage/etc/adminhtml/system.xml

@@ -10,11 +10,11 @@
         <section id="system" type="text" sortOrder="900" showInDefault="1" showInWebsite="1" showInStore="1">
             <group id="media_storage_configuration" translate="label" type="text" sortOrder="900" showInDefault="1" showInWebsite="1" showInStore="1">
                 <label>Storage Configuration for Media</label>
-                <field id="media_storage" translate="label" type="select" sortOrder="100" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
+                <field id="media_storage" translate="label" type="select" sortOrder="100" showInDefault="1" showInWebsite="0" showInStore="0">
                     <label>Media Storage</label>
                     <source_model>Magento\MediaStorage\Model\Config\Source\Storage\Media\Storage</source_model>
                 </field>
-                <field id="media_database" translate="label" type="select" sortOrder="200" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
+                <field id="media_database" translate="label" type="select" sortOrder="200" showInDefault="1" showInWebsite="0" showInStore="0">
                     <label>Select Media Database</label>
                     <source_model>Magento\MediaStorage\Model\Config\Source\Storage\Media\Database</source_model>
                     <backend_model>Magento\MediaStorage\Model\Config\Backend\Storage\Media\Database</backend_model>
@@ -24,7 +24,7 @@
                 </field>
                 <field id="synchronize" translate="label comment" type="button" sortOrder="300" showInDefault="1" showInWebsite="0" showInStore="0">
                     <frontend_model>Magento\MediaStorage\Block\System\Config\System\Storage\Media\Synchronize</frontend_model>
-                    <comment>After selecting a new media storage location, press the Synchronize button to transfer all media to that location. Media will not be available in the new location until the synchronization process is complete.</comment>
+                    <comment>After selecting a new media storage location, press the Synchronize button to transfer all media to that location and then "Save Config". Media will not be available in the new location until the synchronization process is complete.</comment>
                 </field>
                 <field id="configuration_update_time" translate="label" type="text" sortOrder="400" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                     <label>Environment Update Time</label>