Sensible state specific default sort order for issues and merge requests

## What does this MR do?

It provides more sensible default sort order for issues and merge requests based on the following table:

    | type           | state  | default sort order |
    |----------------|--------|--------------------|
    | issues         | open   | last created       |
    | issues         | closed | last updated       |
    | issues         | all    | last created       |
    | merge requests | open   | last created       |
    | merge requests | merged | last updated       |
    | merge requests | closed | last updated       |
    | merge requests | all    | last created       |

## Are there points in the code the reviewer needs to double check?

All the bits where `id_desc` was changed to `created_desc`.
 
I hope it's okay, It makes more sense in my opinion.

## Why was this MR needed?

Prior to this MR the issues and merge request were sorted based on `id_desc` by default. 

This MR aims to make the interface more user-friendly by providing state specific sorting defaults most users would expect. 

## What are the relevant issue numbers?

See #15064 

See merge request !5453