Audio block - Audio files are disabled in Other apps picker if the site is not fully refreshed

[fluiddot]

Describe the bug
I bumped into this randomly while testing a release, I'm not sure if it's 100% related to not having the site fully refreshed but at least that's what it looks like.

As described in the steps to reproduce it, entering on a site before the sites list has finished refreshing leads to having the audio files disabled when adding an Audio block and try to add files via the Other Apps picker.

To Reproduce
Steps to reproduce the behavior:

1. Go to an Atomic site (it should be also reproducible with a premium or business plan site but I haven't checked)
2. Tap on Switch Site
3. Tap on the same Atomic site (this step has to be done quick)
4. Go to Posts
5. Tap on a post
6. Add an Audio block
7. Tap on ADD AUDIO
8. Tap on Other Apps
9. Browse to a folder that has any audio files
10. Observe that the audio files are disabled

Expected behavior
The audio files should always be available for premium and business plan sites.

Screenshots

The following examples show how to get the bug, each example also shows the steps to get it fixed.

In the first example just by waiting for the sites list to be refreshed fixes the issue.

audio-files-disabled-ios-example-1.mov

In the second one just by going back to My Site screen and then go again to the post fixes the issue too.

audio-files-disabled-ios-example-2.mov

Smartphone (please complete the following information):

• Device: iPhone 11
• OS: iOS 14.2
• Version 16.6

Additional context
I used an Atomic site with a Business plan.