[scoped-custom-element-registry] toggleAttribute polyfill does not retain force argument

[jmcgavin]

Description

When calling toggleAttribute, the polyfill does not retain the force argument.

This means that when I call toggleAttribute('my-attribute', false), the attribute is applied when it should not be.

Example

// Include the scoped-custom-element-registry polyfill

this.renderRoot.querySelector('my-custom-element').toggleAttribute('my-attribute', false)

Steps to reproduce

1. Call toggleAttribute on an element
2. Provide 'my-attribute' as the first argument
3. Provide false as the second argument

Expected behavior

my-attribute should not be applied to the element.

Actual behavior

my-attribute is applied to the element.

Version

@webcomponents/[email protected]

Browsers affected

• [x] Chrome
• [x] Firefox
• [x] Edge
• [x] Safari
• [x] IE 11