…, spl_autoload_register() will always throw'

…, spl_autoload_register() will always throw'

…, spl_autoload_register() will always throw'

…, spl_autoload_register() will always throw'

…, spl_autoload_register() will always throw'

…, spl_autoload_register() will always throw'

…, spl_autoload_register() will always throw'

…, spl_autoload_register() will always throw'

…, spl_autoload_register() will always throw'

* Fix 'Notice: spl_autoload_register(): Argument #2 () has been ignored, spl_autoload_register() will always throw'

* Fix 'Fatal error: Declaration of Project::getKanbanColumns() must be compatible with Glpi\Features\Kanban::getKanbanColumns()'

* Fix 'Uncaught Exception TypeError: abs(): Argument #1 () must be of type int|float, string given'

* Handle missing index key on CommonDBTM::update()

* Adapt error handler to PHP 8 changes

* Fix Group_User::testIsUserInGroup() test (Group do not have a is_deleted field)

* Fix Search::testMetaComputerUser() test

* Update sabre/http to fix PHP 8 issue

* Fix 'Uncaught Exception TypeError: Unsupported operand types: array & int in /var/www/glpi/inc/session.class.php at line 1001'

* Fix 'Returning bool from comparison function is deprecated, return an integer'

* Remove usage of error context in specific error handler

* Added parenthesis to fix this error which occurs when creating an Entity multiple choice dropdown: "Uncaught Exception TypeError: array_combine(): Argument #2 ($values) must be of type array, null given in glpi10.0.3/src/Html.php at line 4857"
Added Dropdown::testShow to unit test multiple choice dropdown creation on Entity's itemtype

* Remove unmaintainable test.

* More readable

Co-authored-by: Cédric Anne <[email protected]>