Using Object.defineProperty on a proxied / state wrapped object throws `state_descriptors_fixed` error

[Leonidaz]

Describe the bug

When trying to define a custom getter / setter on a state object via Object.defineProperty, svelte compiler throws the following error:

state_descriptors_fixed Property descriptors defined on `$state` objects must contain `value` and always be `enumerable`, `configurable` and `writable`.

E.g.

	let locals = $state({});
	let count = $state(0);         
	Object.defineProperty(locals, 'count', {
		get: function() { return count },
		set: function(v) { console.log('assigned', v); count = v;},
		enumerable: true,
		configurable: true,
	});

The only way to make it work which defeats the purpose of a custom getter / setter is to remove the getter and setter and provide the value option to the Object.defineProperty:

	let locals = $state({});
	let count = $state(0);
	Object.defineProperty(locals, 'count', {
		value: count,
		enumerable: true,
		configurable: true,
	});

Reproduction

Playground

Logs

No response

System Info

Playground version 5.2.0

Severity

annoyance