fix: Pass charset/Security into ErrorHandler mock controller bootstrap

[hellopablo]

Problem

Fatal error screens cascade into a second fatal:

ArgumentCountError: Too few arguments to function CI_Security::__construct(),
0 passed in .../Common.php:196 and exactly 1 expected

Stack: ErrorHandler::instantiateMockController() → load_class('Security', 'core').

Cause

pocketarc/codeigniter requires:

• CI_Security::__construct($charset)
• CI_Input::__construct(CI_Security &$security)

and boots them as:

$SEC =& load_class('Security', 'core', $charset);
$IN  =& load_class('Input', 'core', $SEC);

instantiateMockController() still called both with no args. This became reachable after the renderErrorView() guard changed from CI_Lang/MX_Lang to get_instance() (FormValidation/Translation work).

Fix

Pass charset into Security and the Security instance into Input, matching CodeIgniter’s bootstrap.

Follow-up

Bump consuming apps’ composer.lock once this lands on feature/pre-new-admin.