Date properties seem to be reassigned / trigger reactivity

[jacobmischka]

Describe the bug

If a component accepts a date property, and a parent component binds that component, then the parent component will think that the property has changed even if the child component performs no changes.

The same doesn't happen if the property is a primitive value like a number, boolean, or string.

Reproduction

https://svelte.dev/repl/8ead02e349fa4884835654f809a77543?version=3.55.1

App.svelte:

<script>
	import DateComponent from './DateComponent.svelte';
	let date = new Date();
	let num = date.valueOf();
	let string = date.toString();
	
	$: console.log("date assigned:", date);
	$: console.log("num assigned:", num);
	$: console.log("string assigned:", string);
</script>

<DateComponent bind:value={date} />
<DateComponent bind:value={num} />
<DateComponent bind:value={string} />

DateComponent.svelte:

<script>
        export let value;
</script>

<pre>value: {value}</pre>

Logs

"date assigned:"    2023-01-24T22:25:16.391Z

    "num assigned:"    1674599116391

    "string assigned:"    "Tue Jan 24 2023 16:25:16 GMT-0600 (Central Standard Time)"

    "date assigned:"    2023-01-24T22:25:16.391Z

System Info

Tested solely in REPL for the purposes of this reproduction, version=3.55.1. Tested with both Firefox and Chrome.

Severity

annoyance

[Prinzhorn]

Duplicate of #5689. It was briefly fixed in 3.54.0 but had to be reverted.

[jacobmischka]

Closing in favor of #5689, thanks!