docs: add explanation about hideUnavailableItems prop

[julia-rabello]

What problem is this solving?

EDU-11504

How to test it?

[Workspace](Link goes here!)

Screenshots or example usage:

Describe alternatives you've considered, if any.

Related to / Depends on

How does this PR make you feel? 🔗

![](put .gif link here - can be found under "advanced" on giphy)

[vtex-io-ci-cd]

Hi! I'm VTEX IO CI/CD Bot and I'll be helping you to publish your app! 🤖

Please select which version do you want to release:

• Patch (backwards-compatible bug fixes)

• Minor (backwards-compatible functionality)

• Major (incompatible API changes)

And then you just need to merge your PR when you are ready! There is no need to create a release commit/tag.

• No thanks, I would rather do it manually 😞

[vtex-io-docs-bot]

Beep boop 🤖

Thank you so much for keeping our documentation up-to-date ❤️

[vtex-io-ci-cd]

Your PR has been merged! App is being published. 🚀
Version 3.129.4 → 3.129.5

After the publishing process has been completed (check #vtex-io-releases) and doing A/B tests with the new version, you can deploy your release by running:

vtex deploy [email protected]

After that your app will be updated on all accounts.

For more information on the deployment process check the docs. 📖