types(query): fix usage of "RawDocType" where "DocType" should be passed

[hasezoey]

Summary

This PR fixes find and fineOne overload returns where DocType should be used over RawDocType, at least to my understanding, this had already been done partially in fa0bc8d, but not for findOne so this could be forward-ported.

The generics for context (as of 7.7.0):

mongoose/types/query.d.ts

Line 191 in 061bb82

class Query<ResultType, DocType, THelpers = {}, RawDocType = DocType, QueryOp = 'find'> implements SessionOperation {

Without this change using and expecting assignability would result in a error like in typegoose:

Type 'QueryHelperThis<typeof QueryMethodsClass, FindHelpers, DocumentType<QueryMethodsClass, FindHelpers>>' is not assignable to type 'QueryWithHelpers<DocumentType<QueryMethodsClass, FindHelpers> | null, DocumentType<QueryMethodsClass, FindHelpers>, FindHelpers, DocumentType<...>, "find">'.
  Type 'QueryHelperThis<typeof QueryMethodsClass, FindHelpers, DocumentType<QueryMethodsClass, FindHelpers>>' is not assignable to type 'Query<DocumentType<QueryMethodsClass, FindHelpers> | null, DocumentType<QueryMethodsClass, FindHelpers>, FindHelpers, DocumentType<...>, "find">'.
    The types returned by 'find(...)' are incompatible between these types.
      Type 'QueryWithHelpers<QueryMethodsClass[], DocumentType<QueryMethodsClass, FindHelpers>, FindHelpers, QueryMethodsClass, "find">' is not assignable to type 'QueryWithHelpers<DocumentType<QueryMethodsClass, FindHelpers>[], DocumentType<QueryMethodsClass, FindHelpers>, FindHelpers, DocumentType<...>, "find">'.
        Type 'QueryWithHelpers<QueryMethodsClass[], DocumentType<QueryMethodsClass, FindHelpers>, FindHelpers, QueryMethodsClass, "find">' is not assignable to type 'Query<DocumentType<QueryMethodsClass, FindHelpers>[], DocumentType<QueryMethodsClass, FindHelpers>, FindHelpers, DocumentType<...>, "find">'.
          The types returned by 'exec()' are incompatible between these types.
            Type 'Promise<QueryMethodsClass[]>' is not assignable to type 'Promise<DocumentType<QueryMethodsClass, FindHelpers>[]>'.
              Type 'QueryMethodsClass[]' is not assignable to type 'DocumentType<QueryMethodsClass, FindHelpers>[]'.
                Type 'QueryMethodsClass' is not assignable to type 'DocumentType<QueryMethodsClass, FindHelpers>'.
                  Type 'QueryMethodsClass' is missing the following properties from type 'Document<unknown, FindHelpers, QueryMethodsClass>': $assertPopulated, $clone, $getAllSubdocs, $ignore, and 47 more.ts(2322)

no change was necessary (to not result in a type error) before mongoose 7.6.6 and no change was necessary in mongoose 8.0.0 and up