Steps to reproduce the issue

Open global configuration and see outer html of the field "Search Engine Friendly URLs"

<joomla-field-switcher id="jform_sef" off-text="No" on-text="Yes" type="success">
<span class="switcher active has-success" tabindex="0" aria-checked="true" role="switch" aria-label="Yes"><input id="jform_sef0" name="jform[sef]" value="0" tabindex="-1" class="valid form-control-success" aria-invalid="false" type="radio"><input id="jform_sef1" name="jform[sef]" value="1" class="valid active form-control-success" tabindex="-1" checked="" aria-invalid="false" type="radio"><span class="switch"></span></span><span class="switcher-labels"><span class="switcher-label-0">No</span><span class="switcher-label-1 active">Yes</span></span></joomla-field-switcher>

Open /administrator/components/com_config/forms/application.xml

and change the field (insert onclick and onchange`)

		<field
			name="sef"
			type="radio"
			label="COM_CONFIG_FIELD_SEF_URL_LABEL"
			class="switcher"
			default="1"
			filter="boolean"
			>
			<option value="0">JNO</option>
			<option value="1">JYES</option>
		</field>

to

		<field
			name="sef"
			type="radio"
			label="COM_CONFIG_FIELD_SEF_URL_LABEL"
			class="switcher"
			default="1"
			filter="boolean"
			onclick="MyOnclickEvent"
			onchange="MyOnchangeEvent"
			>
			<option value="0">JNO</option>
			<option value="1">JYES</option>
		</field>

Open again global configuration and see outer html of the field "Search Engine Friendly URLs". Nothing is added.

Expected result

Onclick event and Onchange event are added to the field "Search Engine Friendly URLs".

Actual result

Nothing changed.

System information (as much as possible)

Current 4.0-dev branch on ubuntu

Additional comments

In the layout file
/layouts/joomla/form/field/radio/switcher.php
onclick and onchange are added from option. But the value is a separet variable. Pheraps this is the problem?