chore(android): Add product list to Nav2 sample

[0xadam-brown]

📜 Description

Adds a new hide/show product list button to the Nav2Activity. For the Compose tab, doing so lets us observe the span-producing of multiple SentryTraced composables inside the same nav transaction.

The list was also added to the Fragments tab to maintain UI parity.

💡 Motivation and Context

Better manual test (and LLM) coverage for SentryTraced.

💚 How did you test it?

By hand.

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.
• Public API changes reviewed by another Mobile SDK team member or implemented according to the develop docs spec.

🔮 Next steps

#skip-changelog

[sentry]

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.55.0 (1)	release

⚙️ sentry-android Build Distribution Settings

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