Binding to store through a component does an unnecessary set

[sickl8]

Describe the bug

Binding to a store through a component does an unnecessary set to the store with it's current value

Reproduction

<!-- Main.svelte -->

<script lang="ts">
	import { type Writable } from "svelte/store";
	import CheckboxComponent from "./CheckboxComponent.svelte";
	
	type MyWritable<T> = Writable<T> & {
		value: T;
		subs: Set<(newValue: T) => any>;
	};
	function log(...args: any[]) {
		console.log(new Error().stack?.replace(/.*Error\n/, ""))
		console.log(...args);
	}

	function createWritable<T>(initial: T): MyWritable<T> {
		let ret: MyWritable<T> = {
			value: initial,
			subs: new Set(),
			set(newV) {
				// compiler/compile/render_dom/invalidate.js:108						invalidate svelte variable ?
				// compiler/compile/render_dom/invalidate.js:125						invalidate svelte store ?
				// compiler/compile/render_dom/wrappers/InlineComponent/index.js:372	where invalidate for both is created ?
				log({ set: newV });
				ret.value = newV;
				ret.subs.forEach(subscriber => subscriber(ret.value));
			},
			update(callback) {
				let newV = callback(ret.value);
				log({ update: newV });
				ret.set(newV);
			},
			subscribe(subscriber) {
				subscriber(ret.value);
				log({ subscribe: subscriber });
				ret.subs.add(subscriber);
				return () => {
					log({ unsub: subscriber });
					ret.subs.delete(subscriber);
				};
			},
		};
		return ret;
	}
	const writable = createWritable(false);
</script>

<!-- binding to elements directly does not trigger a set on the store -->
<input type="checkbox" bind:checked={$writable} />
<CheckboxComponent bind:checked={$writable} />

<!-- CheckboxComponent.svelte -->

<script lang="ts">
	export let checked: boolean;
</script>

<input type="checkbox" bind:checked>
<!-- could also be just a <div>{checked}</div> and it would be the same result -->

Logs

at log (http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:131:14)
    at Object.subscribe (http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:151:4)
    at subscribe (http://localhost:5173/node_modules/.vite/deps/chunk-2KUOQYVC.js?v=90f11c1d:87:23)
    at component_subscribe (http://localhost:5173/node_modules/.vite/deps/chunk-2KUOQYVC.js?v=90f11c1d:96:32)
    at instance (http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:170:2)
    at init (http://localhost:5173/node_modules/.vite/deps/chunk-2KUOQYVC.js?v=90f11c1d:2166:23)
    at new BindSet (http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:201:3)
    at createProxiedComponent (http://localhost:5173/node_modules/svelte-hmr/runtime/svelte-hooks.js?v=90f11c1d:341:9)
    at new ProxyComponent (http://localhost:5173/node_modules/svelte-hmr/runtime/proxy.js?v=90f11c1d:242:7)
    at new Proxy<BindSet> (http://localhost:5173/node_modules/svelte-hmr/runtime/proxy.js?v=90f11c1d:349:11)
BindSet.svelte:12
 {subscribe: ƒ}
  > subscribe: value => $$invalidate(0, $writable = value)[[Prototype]]: Object
BindSet.svelte:11
     at log (http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:131:14)
    at Object.set (http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:140:4)
    at Array.checkboxcomponent_checked_binding (http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:184:12)
    at checkboxcomponent_checked_binding (http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:44:47)
    at bind (http://localhost:5173/node_modules/.vite/deps/chunk-2KUOQYVC.js?v=90f11c1d:2099:5)
    at http://localhost:5173/src/pages/components/BindSet.svelte?t=1705537115510:58:31
    at flush (http://localhost:5173/node_modules/.vite/deps/chunk-2KUOQYVC.js?v=90f11c1d:1304:30)
BindSet.svelte:12
 {set: false}
BindSet.svelte:11

System Info

System:
    OS: Linux 5.10 Ubuntu 20.04.6 LTS (Focal Fossa)
    CPU: (4) x64 Intel(R) Core(TM) i5-7500 CPU @ 3.40GHz
    Memory: 10.57 GB / 12.45 GB
    Container: Yes
    Shell: 5.0.17 - /bin/bash
  Binaries:
    Node: 18.19.0 - ~/.nvm/versions/node/v18.19.0/bin/node
    npm: 10.2.3 - ~/.nvm/versions/node/v18.19.0/bin/npm
    pnpm: 7.24.3 - /usr/bin/pnpm
  npmPackages:
    svelte: ^4.2.1 => 4.2.1

Severity

annoyance

[Prinzhorn]

#6298 and more generally #5689

[dummdidumm]

Closing as a duplicate of those referenced issues