[FIX] google_drive: current record

- Open a partner view, click on Action > Partner Review
- Switch to another partner
- Click again on Action > Partner Review

The Google Doc file of the second partner is the same than the first
partner.

This is due to `_onGoogleDocItemClicked` which is always called with the
same `resID`, i.e. the `resID` used at `start`.

We retrieve the active ID at each click instead.

opw-1882068

closes odoo/odoo#27132