Using literal when spreading props generates invalid code

[Conduitry]

<Foo {...{ bar: 42 }}/>

generates

			var foo_changes = () ? get_spread_update(foo_spread_levels, [
				{ bar: 42 }
			]) : {};

because { bar: 42 } has no dependencies.

[Conduitry]

svelte/src/compiler/compile/render_dom/wrappers/InlineComponent/index.ts

Line 223 in 17096e6

var ${name_changes} = ${all_dependencies.size === 1 ? `${conditions}` : `(${conditions})`} ? @get_spread_update(${levels}, [

I'd assume we should be generating var ${name_changes} = {}; when all_dependencies is empty.