function is_resolved_snippet(binding) {
	return (
		!binding ||
		binding.declaration_kind === 'import' ||
		binding.kind === 'prop' ||
		binding.kind === 'rest_prop' ||
		binding.kind === 'bindable_prop' ||
		binding?.initial?.type === 'SnippetBlock'
	);
}
Returns `true` if a binding unambiguously resolves to a specific
snippet declaration, or is external to the current component
@param {Binding | null} binding