Webapp/Module Edit Forms - support Boolean type field

Boolean type field works in add forms, but not in edit forms. This is partially because forms rely on JS new Formdata() which ignores unchecked checkboxes, but also needs a way to interpret unchecked value true as false. The code intended to handle checkboxes does not currently provide a solution for Boolean type fields.

For an example of a boolean field front-end implementation, see here, value “true” checkbox:

<fieldset class="w-full">
  <legend class="block mb-2 text-sm font-medium text-gray-900 dark:text-gray-300">{{label}}</legend>
  <div {{attributes}} class="boolean {{validation}} flex items-center mb-4">
    <input {{attributes}} {% if value == true or value == "true" %}checked{% endif %} class="w-4 h-4 text-info-600 bg-gray-100 rounded border-gray-300 focus:ring-info-500 dark:focus:ring-info-600 dark:ring-offset-gray-800 focus:ring-2 dark:bg-gray-700 dark:border-gray-600" type="checkbox" name="{{name}}" id="{{name}}_true" value="true">
    <label class="ml-2 text-sm font-medium text-gray-900 dark:text-gray-300" for="{{name}}_true">true</label>
  </div>
</fieldset>

Intended behaviour should be that checked boolean sets value true, and unchecked value false. Currently checked sets value true, but unchecked is left out of form submission, so works on a new item create to leave null, but doesn’t ever set to false.