FIX: don't reset order in categories route (PR #10393)

The change was introduced here: https://github.com/discourse/discourse/commit/12913a46e4e

It behaves weirdly with custom tabs added by plugins because they are using order to navigate. Therefore I think we should not reset order.

Before: Zg5uAPFyQl

After: 5bEbGiLN4c

GitHub

Revert solved the problem - https://github.com/discourse/discourse/commit/232d277833c5e89aef1569b2167436b53f5747bb