[Project] Up Next Shuffle - Update Shuffle Button Visibility

[mebarbosa]

Description

• Update the shuffle button visibility. It will be visible only when the up next is not empty
• Context: p1730257991386309/1730230283.156089-slack-C07T08CTND9

Fixes #3089

Testing Instructions

1. Have the shuffle feature flag on
2. Play an episode and have up next empty
3. Tap on Up next tap
4. ✅ Ensure you don't see the shuffle button
5. Add episodes to up next
6. Open Up next
7. ✅ Ensure you see the shuffle button

Screenshots or Screencast

Free User

Screen_recording_20241030_085326.webm

Plus User

Screen_recording_20241030_085412.webm

Checklist

• If this is a user-facing change, I have added an entry in CHANGELOG.md
• Ensure the linter passes (./gradlew spotlessApply to automatically apply formatting/linting)
• I have considered whether it makes sense to add tests for my changes
• All strings that need to be localized are in modules/services/localization/src/main/res/values/strings.xml
• Any jetpack compose components I added or changed are covered by compose previews
• I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.

[wpmobilebot]

📲 You can test the changes from this Pull Request in 📱 Mobile by scanning the QR code below to install the corresponding build.

	App Name	📱 Mobile
	Build Type	debugProd
	Commit	78d0047
	Direct Download	pocketcasts-app-prototype-build-pr3134-78d0047.apk

📲 You can test the changes from this Pull Request in 🚗 Automotive by scanning the QR code below to install the corresponding build.

	App Name	🚗 Automotive
	Build Type	debugProd
	Commit	78d0047
	Direct Download	pocketcasts-automotive-prototype-build-pr3134-78d0047.apk

📲 You can test the changes from this Pull Request in ⌚ Wear by scanning the QR code below to install the corresponding build.

	App Name	⌚ Wear
	Build Type	debugProd
	Commit	78d0047
	Direct Download	pocketcasts-wear-prototype-build-pr3134-78d0047.apk