fix: do not pass a boolean for icons when saving

If the option is not set, and thus its value is the same as the default
(false) remove it from the current object to avoid sending a boolean
value that the backend does not expect.
This was causing any save to return 500.

src/modules/current.js

@@ -82,6 +82,9 @@ export const getOptionsFromUi = (ui) => {
     // icons is stored as array of objects { type: DATA_ITEM }
     if (optionsFromUi.icons !== options.icons.defaultValue) {
         optionsFromUi.icons = [{ type: 'DATA_ITEM' }]
+    } else {
+        // if options is not enabled, do not pass the "internal" boolean value
+        delete optionsFromUi.icons
     }
 
     // nested options under reportingParams