social/email_template_qweb/views/mail_template.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo>
    <record id="email_template_form" model="ir.ui.view">
        <field name="model">mail.template</field>
        <field name="inherit_id" ref="mail.email_template_form" />
        <field name="arch" type="xml">
            <field name="model_id" position="after">
                <field name="body_type" />
            </field>
            <field name="body_html" position="before">
                <group attrs="{'invisible': [('body_type', '!=', 'qweb')]}">
                    <field name="body_view_id" attrs="{'required': [('body_type', '=', 'qweb')]}" />
                    <field name="body_view_arch" attrs="{'required': [('body_type', '=', 'qweb')], 'invisible': [('body_view_id', '=', False)]}" />
                </group>
            </field>
            <field name="body_html" position="attributes">
                <attribute name="attrs">{'invisible': [('body_type', '!=', 'jinja2')]}</attribute>
            </field>
        </field>
    </record>
    <record id="email_template_tree" model="ir.ui.view">
        <field name="model">mail.template</field>
        <field name="inherit_id" ref="mail.email_template_tree" />
        <field name="arch" type="xml">
            <field name="report_name" position="before">
                <field name="body_type" />
            </field>
        </field>
    </record>
</odoo>