[FIX] web: orm: protect webSearchRead

The values for the key "async" found in some services is used to declare
async methods that should be "protected". The hook "useService" makes sure
that no code used to process results of those protected methods is
executed by a destroyed component. The orm method "webSearchRead" was
not protected due to a "typo".

closes odoo/odoo#125679

X-original-commit: 2899888a
Signed-off-by: Géry Debongnie <ged@odoo.com>