File firstboot-transform.xsl of Package yast2-firstboot-wsl
<!-- awesome xslt by Fabian -->
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:y="http://www.suse.com/1.0/yast2ns" xmlns="http://www.suse.com/1.0/yast2ns" xmlns:config="http://www.suse.com/1.0/configns">
<xsl:output indent="yes"/>
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="y:module[y:name = 'registration']/y:enabled/text()">
<xsl:text>true</xsl:text>
</xsl:template>
</xsl:stylesheet>