Checkboxes within components don't work with bind:group

[arggh]

Describe the bug

Enclosing inputs of type checkbox within components (let's call them toggles) will break, when using the group binding:

<script>
	export let group;
	export let value;
</script>

<label>
	<input type="checkbox" bind:group {value}/>
	<slot></slot>	
</label>

When using this component instead of plain inputs, only one value can be selected.

To Reproduce

https://svelte.dev/repl/b81ce8c9051e4f36ada03d36370a4ceb?version=3.23.2

Expected behavior
I would expect to be able to select multiple checkboxes and the underlying array to hold the selected values.

Information about your Svelte project:

• Your browser and the version: Chrome latest

• Your operating system: Mac OS Mojave

• Svelte version: 3.23.2

Severity

Severe.

[Conduitry]

This sounds like a duplicate of #2308.