Ensure the google slide are displayed in both readonly and editable mode. The slides should be hidden only if the url is wrong or empty. closes odoo/odoo#103872 Task: 2991906 X-original-commit: bbf4f1e7b9cb456f2930c270f7e2b2c35cc9e80d Related: odoo/enterprise#33100 Signed-off-by: William Henrotin (whe) <whe@odoo.com>