When the virtual domains mapping config indicates that the local DB should be used using the config value `[ 'db' => false ]`, the SchemaChangesHandler.php file does not recognise that the local DB should be used. When this config is undefined, the update handler works as intended.
=====Steps to replicate the issue
# Define `$wgVirtualDomainsMapping['virtual-mediamoderation'] = [ 'db' => false ];` in your `LocalSettings.php`
# Add MediaModeration to the wiki
# Run `update.php`
**What happens?**:
The output of the maintenance script has the text `Unable to perform DB updates for MediaModeration as the table is on an virtual database domain.`
**What should have happened instead?**:
No such text should appear and the database table `mediamoderation_scan` should be added to the local wiki's DB.
=====Software version
MediaWiki 1.42.0-alpha (5a624a4) 07:56, 14 November 2023. MediaModeration 0.1.0 (78a3f62) 18:45, 19 November 2023.