Since the split of components with their templates in dedicated file in https://github.com/odoo/o-spreadsheet/commit/10e1a0ca, the templates were eager-loaded. However, this had an impact on the size of the `assets_qweb` bundle. This commit introduces the lazy-loading of the `spreadsheet.o_spreadsheet` bundle since it is now achievable. A followup of https://github.com/odoo/enterprise/pull/30609 task 2896049 closes odoo/odoo#102118 X-original-commit: 15af10c207d6a359a58b5778bd414ff7b543a020 Signed-off-by: Lucas Lefèvre (lul) <lul@odoo.com>