Show the sub-list of locales when searching for a LocaleString field with the 'Mass update' window filter

When you open the 'Mass update' window to perform a mass update, a list of fields are presented, which allow you to select which fields to modify for the mass update.

In this list of fields, the LocaleString fields have an additional sub-list that has all the locales that a LocaleString supports. With this sub-list, the user can select which locales to modify for the mass update, while leaving the values of the other locales in the field alone.

If you use the 'filter' feature in the 'Mass update' window to search for a LocaleString, however, you only get the LocaleString field as a result. The sub-list of locales doesn't appear. If you check the box of the LocaleString field, it will select all the locales for modification.

This can be a problem in environments that have EntityTypes with a large amount of fields, as it can be cumbersome to to scroll through the list of fields to find the desired LocaleString field.

If a LocaleString field is searched for using the 'Mass update' window's filter, the LocaleString field and its sub-list of supported locales should be included in the result.