MT#57338 Remove preferences when set to false or empty array value

Change-Id: I9b7c296603d21ce46987dd4ede7a9c5aefa363ec

src/api/subscriber.js

@@ -35,6 +35,9 @@ export async function getPreferencesDefs (id) {
 }
 
 export async function setPreference (id, field, value) {
+    if (value === undefined || value === null || value === '' || value === false || (Array.isArray(value) && !value.length)) {
+        await removePreference(id, field)
+    } else {
         try {
             await replacePreference(id, field, value)
         } catch (err) {
@@ -50,6 +53,7 @@ export async function setPreference (id, field, value) {
                 throw err
             }
         }
+    }
 }
 
 export async function removePreference (id, field) {

src/pages/CscPageCallBlockingPrivacy.vue

@@ -12,7 +12,7 @@
                 <q-item-section>
                     <q-toggle
                         :label="$t('Hide your number to the callee')"
-                        :value="privacy"
+                        :value="privacy || false"
                         :disable="privacyLoading"
                         data-cy="csc-privacy-hide"
                         checked-icon="visibility_off"