``project_list`` (OCA) is not ported to 17.0 and is merged into core: in 17.0
the core ``project`` module natively adds the kanban/tree views to the
"Projects" actions (``act_window_id`` 149 & 760), and 17.0 introduces the
constraint ``act_window_view_unique_mode_per_action = unique(act_window_id,
view_mode)``.
When core reloads ``project_project_views.xml`` it INSERTs its own
``(act_window_id, view_mode='kanban')`` rows, colliding with the rows still
owned by ``project_list`` and aborting the registry load with a
``UniqueViolation`` on ``act_window_view_unique_mode_per_action``.
Delete ``project_list``'s ``ir.actions.act_window.view`` records (and their
``ir_model_data``) in ``versions/17.0/pre_upgrade.sh`` so core can recreate its
canonical rows. Verified against the 17.0 OpenUpgrade scripts: none reference
``project_list`` xml-ids nor remap these records, so this is safe. Scoped to
``ir.actions.act_window.view`` only, idempotent.
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