`InferRawDocTypeFromSchema` type missing `_id`

[lobabob]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Mongoose version

9.2.3

Node.js version

22.14

MongoDB server version

8.2.3

Typescript version (if applicable)

5.7.3

Description

I expect the InferRawDocTypeFromSchema type to be the same as what's returned from .lean(). As far as I understand it, it should result in the same output as InferRawDocType which does have _id.

Steps to Reproduce

const schemaDefinition = new Schema({
  email : { 
    type : String ,
    trim: true,
    required : true,
    unique: true,
    lowercase: true
  },
  password : {
    type : String ,
    required : true,
  },
  dateOfBirth: {
    type: Date,
    required: true
  }
})

const TestModel = mongoose.model('Test', schemaDefinition);
type TestType = mongoose.InferRawDocTypeFromSchema<typeof schemaDefinition>;

let test: TestType | null;

async function queryById(id: string ){
    let test: TestType | null ;
    TestModel.findById(id).lean().then(result=>{
        if (result){
            test = result
            console.log(result._id)
            console.log(test._id) // This throws a type error since _id doesn't exist on the type when it should
        }
    })
}

Expected Behavior

I would expect the _id to exist here since it's technically part of the schema. I would expect it to behave the same as InferRawDocType.