[FIX] mrp : replacing tracked part in repair fails uniqueness

Issue: When replacing a tracked part while doing a repair, we
are changing the tracking number, but when checking for uniqueness,
we don't take that change into consideration

Steps to reproduce :
 1) Manufacture product A with SN "A1" out of product B with SN "B2"
 2) Make Repair Order for "A1" to replace "B2" with Product B (SN "B1").
 3) Create Manufacturing Order product A (A2), select product B with SN
  "B2" as one of the components.
 4) Mark as done
 -> Bug : "The serial number <B2> used for component <B> has already
 been consumed".

Why is that a bug:
 When checking for uniqueness we should take into consideration the
 parts being replaced

opw-2625687

closes odoo/odoo#75717

Signed-off-by: William Henrotin <Whenrow@users.noreply.github.com>