**Steps to reproduce:**
- Select a document to open the document inspector.(say Employment Contract.pdf)
- Click on the resource link of that document.(located below folder)

**Issue:**
When a user tries to open a document resource from the documents inspector, it leads to a traceback.

**Cause:**
The issue has been faced since https://github.com/odoo/odoo/pull/149906/commits/bc4ebf44e224a9e4dec0c924f835af52086ba4b6 as it introduces some code to handle the fields of type "many2one_reference" in 'utils.js', thus changing the returned value in case of res_id. 
(i.e. Instead of simply returning the 'value' of resId, it returns an object { resId: value })
As a result, validateProps throws an error due to an invalid type of res_id received.

**Fix:**
This commit tweaks the arguments of the orm call in `onClickResModel` method to ensure that the res_id passed 
is of type 'number'.

Task: [3764083](https://www.odoo.com/web#id=3764083&menu_id=4722&cids=2&action=333&active_id=10888&model=project.task&view_type=form)