EZP-31668: Introduced new key for user related pagination configuration

[ViniTou]

Question	Answer
Tickets	EZP-31668
Bug fix?	yes
New feature?	no
BC breaks?	yes
Tests pass?	yes
Doc needed?	yes
License	GPL-2.0

This is counterproposition to #41 that fix the issue in the easiest way, as it seems those parameters are not widely used this seems to be safe change in terms of making all other pagination parameters accessible.

it is now:

ezpublish:
   system:
     default:
           pagination_user: # <-- new
               user_settings_limit: 10

instead of

ezpublish:
   system:
     default: 
           pagination: # <-- old
               user_settings_limit: 10

ezsystems/ezplatform-admin-ui#1394

Checklist:

• Implement tests
• Coding standards ($ composer fix-cs)

[michal-myszka]

Please update also a key for pagination_user in comment above

[micszo]

FYI, in case everyone isn't aware, if one limit is set under pagination key then it is required that all the keys are set (17).

[micszo]

QA Approved on eZ Platform EE 2.5.11 with branches.

[lserwatka]

You can merge it up.