[Gutenberg] Allow audio upload to premium users after Jetpack features removal

[fluiddot]

This PR fixes a bug where premium users can't upload Audio files after the Jetpack features are removed. This issue was introduced in #17587.

NOTE: The issue addressed in this PR is only affecting the WordPress app as the removal of Jetpack features is only applied in that app.

To test

Preparation:

1. Open the WordPress app.
2. Go to "Debug settings" screen via "Me -> App Settings" screen.
3. Enable "jp_removal_four" (this flag will remove Jetpack features)

Simple site - Paid plan

1. Go to a Simple site with a paid plan.
2. Open/create a post.
3. Add an Audio block.
4. In the "Choose audio" picker, observe that it displays the following options:

• WordPress Media Library
• Insert from URL
• Other Apps

Simple site - Free site

1. Go to a Simple site with the free plan.
2. Open/create a post.
3. Add an Audio block.
4. In the "Choose audio" picker, observe that it only displays the option "Insert from URL".

Regression Notes

1. Potential unintended areas of impact
   N/A

2. What I did to test those areas of impact (or what existing automated tests I relied on)
   N/A

3. What automated tests I added (or what prevented me from doing so)
   N/A

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[wpmobilebot]

📲 You can test these changes on Jetpack by downloading jetpack-installable-build-pr18075-c8ec9c3.apk

	💡 Scan this QR code with your Android phone to download and install the APK directly on it.
	App	Jetpack
	Build Flavor	Jalapeno
	Build Type	Debug
	Commit	c8ec9c3

Note: This installable build uses the JalapenoDebug build flavor, and does not support Google Login.

[wpmobilebot]

📲 You can test these changes on WordPress by downloading wordpress-installable-build-pr18075-c8ec9c3.apk

	💡 Scan this QR code with your Android phone to download and install the APK directly on it.
	App	WordPress
	Build Flavor	Jalapeno
	Build Type	Debug
	Commit	c8ec9c3

Note: This installable build uses the JalapenoDebug build flavor, and does not support Google Login.

[peril-wordpress-mobile]

	Warnings
⚠️	This PR is assigned to a milestone which is closing in less than 4 days Please, make sure to get it merged by then or assign it to a later expiring milestone

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[geriux]

LGTM! I tested this on the WordPress app with both testing scenarios 🚀