[FIX] project_issue: override `_track_template`
[FIX] project_issue: override `_track_template`

Properly override `_track_template` similarly to what is done for
`project.task`, so the method can accept a recordset.

Co-authored by: Nicolas Martinelli <nim@odoo.com>

Closes #23466
opw-1823244

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo