Move # section to end of AZ list (PLAYRTS-5499)

[pyby]

Motivation and Context

It looked like a mistake if the navigation starts with #0-9 in the "A to Z" view. Also if a user navigates with a screen reader (like VoiceOver), it's easier to understand at the end of the navigation.

The show list should start with “A” section. And “#“ should be at the end of the list.

Description

• Move "#" section to the end of the AZ list (in Videos and Audios).

Checklist

• The branch should be rebased onto the develop branch for whole tests with nighties, but it's not required.*
• The code followed the code style as make quality passes with a green tick on the last commit.
• Remote configuration properties have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• Issues are linked to the PR, if any.

* The project uses Github merge queue feature, which rebases onto the develop branch before squashing and merging the PR.