Add sorting to collection items (#16385)

* Add sorting params to Search entity

* Remove pinned items sorting by `collection_position`

* Add default sorting to collection items

* Add sorting controls

* Add test IDs to table head and columns

* Move pagination tests into separate file

* Make pagination tests independent from dataset

* Allow creating pinned items via API in Cypress

* Add sorting E2E tests

* Fix sorting by "Last edited at" column

* Add sorting by "Last edited by" column

* Fix BaseItemsTable unit test