Adds new Checkbox and CheckboxField components (#37665)

app/javascript/mastodon/components/form_fields/index.ts

@@ -1,4 +1,5 @@
 export { TextInputField } from './text_input_field';
 export { TextAreaField } from './text_area_field';
-export { ToggleField, PlainToggleField } from './toggle_field';
+export { CheckboxField, Checkbox } from './checkbox_field';
+export { ToggleField, Toggle } from './toggle_field';
 export { SelectField } from './select_field';