I have one theme that is removing a specific css file that is not needed for it.
layout/default_head_blocks.xml
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<head>
<remove src="mage/calendar.css"/>
</head>
I now have a child theme that inherits the above theme. Is there a way to undo this remove?