Describe the bug

having a variable declared as $state which is an object with properties that have no $state in their definition causes this warning

class Address {
    street?: string
}

let address: Address = $state();

<TextInput bind:value={address.street} 

These cause this warning and no value can be typed

client.js:2682 [svelte] binding_property_non_reactive
bind:value={address.street} (src/lib/editor.svelte) is binding to a non-reactive property

Is there a way if the object variable is declared reactive $state allow all its properties despite not being declared reactive to behave like their are reactive?

Or how would this can be solved, in cases where the class definition is an external generated and no way of modifying to make it reactive and not having to redefine classes and manually copy them?

Reproduction

no need to repro just an example of the problem

Logs

No response

System Info

svelte 5 ---

Severity

blocking an upgrade

Additional Information

No response