How to modify preferences from outside the admin panel

[GerardPolloRebozado]

Acording to the docs the hooks to modify the preferences are not available outside the admin panel and I need to add a dropdown fro the user to be able to change the laguage of the website so I decided to make an action and use the payload object to modify it like this:

"use server"

import { getPayload } from "payload";
import { headers as getHeaders } from "next/headers";
import configPromise from '@payload-config';

export async function setPreference(preference: string, value: string): Promise<boolean> {
    const headers = await getHeaders();
    const payload = await getPayload({ config: await configPromise })
    const { user } = await payload.auth({ headers })
    if (!user || !user) {
        return false;
    }
    const preferences = await payload.find({
        collection: 'payload-preferences',
        user: {
            equals: user.id,
        },
        where: {
            key: {
                equals: preference,
            }
        },
        depth: 0,
    })
    if (preferences && preferences.docs.length > 0 && typeof preferences.docs[0].value === 'string') {
        await payload.update({ <----- This gives error saying the user is not valid but I didnt have any user so I added the user from the find
            collection: 'payload-preferences',
            id: preferences.docs[0].id,
            data: {                   
                key: preferences.docs[0].key,       
                user: preferences.docs[0].user, 
                value,
            },
        })
        return true;
    }
    return false;
}

But when trying to use this action it says theres an error on the update because the user is invalid I tried with and without the user field but both give error so not sure how to fix this. also it doesnt say why its invalid.

[GerardPolloRebozado]

Found a pr that could solve this