FpExpressActionBtns.onOpen called action_open_part which returned an
ir.actions.act_window dict without a 'views' key. Odoo 19's
_preprocessAction in the web client tries to .map over action.views
and throws TypeError: Cannot read properties of undefined (reading 'map').
Fix: include 'views': [[False, 'form']] alongside view_mode='form' on
both copies of action_open_part (wizard line + sale.order.line).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
f8abadfc18
