how to populate reference field when that document is updated - mongodb

Question

I have 2 collections Users and Bookings. I created userSchema and bookingSchema and routes of bookings and users.
User Schema
const userSchema = new mongoose.Schema({
name: String,
active: {
type: Boolean,
default: true,
// select: false,
},
});
userSchema.pre(/^find/, function (next) {
this.find({ active: { $ne: false } });
next();
});
Booking Schema
const bookingSchema = new mongoose.Schema({
from: String,
to: String,
user: {
type: mongoose.Schema.ObjectId,
ref: 'User',
},
});
bookingSchema.pre(/^find/, function (next) {
this.populate({
path: 'user ',
});
next();
});
I defined my routes as follows
router.get('/api/bookings/:id', async (req, res) => {
const booking = await Booking.findById(req.params.id);
res.send(booking);
});
My issue is I created user document
{
_id: "60ab239958c0ac2882d30531",
active: true,
name: "rohit"
}
and booking document
{
"_id": "60ab1fe50618d805581f154a",
"from": "delhi",
"to": "mumbai",
"user": {
"_id": "60ab1fac0618d805581f1549",
"name": "rohit",
"__v": 0
},
"__v": 0
}
Now when I update active field to false in user "rohit" then when I fetch booking of rohit I get null in user field! (I can't delete pre middleware in user schema)
{
"_id": "60ab1fe50618d805581f154a",
"from": "delhi",
"to": "mumbai",
"user": null,
"__v": 0
}