[FIX] web: missing multiLang in l10n

Before this commit the multi_lang parameter
was not properly retrieved from the server on the JS side.

closes odoo/odoo#94743

X-original-commit: 9dfdb1d0ded4b8739f93756987f61aa09658a840
Signed-off-by: Géry Debongnie <ged@odoo.com>
Signed-off-by: Bruno Boi (boi) <boi@odoo.com>

addons/web/static/src/core/l10n/localization_service.js

@@ -39,7 +39,11 @@ export const localizationService = {
             throw new Error("Error while fetching translations");
         }
 
-        const { lang_parameters: userLocalization, modules: modules } = await response.json();
+        const {
+            lang_parameters: userLocalization,
+            modules: modules,
+            multi_lang: multiLang,
+        } = await response.json();
 
         // FIXME We flatten the result of the python route.
         // Eventually, we want a new python route to return directly the good result.
@@ -79,7 +83,7 @@ export const localizationService = {
             decimalPoint: userLocalization.decimal_point,
             direction: userLocalization.direction,
             grouping,
-            multiLang: userLocalization.multi_lang,
+            multiLang,
             thousandsSep: userLocalization.thousands_sep,
             weekStart: userLocalization.week_start,
         });