Refactored add_available_articles.jsx from class to functional component

[omChauhanDev]

What this PR does

Refactored from class to functional component.

Before

Before:
Screencast from 2023-12-31 11-01-47.webm

After:
After.webm

[ragesoss]

A quick look at the code looks good, but I'd like to get #5568 sorted out before merging this; I can see it happens in both of your videos.

[ragesoss]

Okay, I believe that error in your videos was the Redis thing in your environment, which I think I posted about elsewhere... so, this is good to go.

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ TypeError: Cannot read properties of null (reading 'map') AddAvailableArticles.submit(app/assets/javascri... View Issue

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