[FIX] dashboard: properly handle grid resize in dashboard mode#7404

rmbh-odoo wants to merge 1 commit intosaas-18.4odoo/o-spreadsheet:saas-18.4from

saas-18.4-fix-dashboard-gray-background-rmbhodoo/o-spreadsheet:saas-18.4-fix-dashboard-gray-background-rmbhCopy head branch name to clipboard