Only the first lists of each category shows up in the "List where subscribers are saved" field

Problem/Motivation

Only the first ten lists shows up in the "List where subscribers are saved" field

Steps to reproduce

have more than ten contact lists in send in blue=> get list is by default loading only ten list (and caped to 50 ) (see line 1889 of ListAPi.php)

Proposed resolution

A paginated list selector, but if it is to heavy to implement you could:
Up that number to fifty and maybe add the option to enter the list ID manualy through a text field ? (and indicate clearly that list number is caped to 50).

Remaining tasks

User interface changes

API changes

Data model changes