Describe the bug
If the project is created, and we forget to call initialize or create the StripeProvider context, android fails silently and never rejects the promise when using PaymentSheet

To Reproduce
Steps to reproduce the behavior:

1. Create a new project
2. Call initializePaymentSheet without creating the context or calling init
3. At this stage, the promise never resolves or rejects and it's hard to debug the reason

Expected behavior
Reject the promise with a message that init should be called or StripeProvider should be created

Smartphone (please complete the following information):

• Device: Any android device
• OS: Android
• Version 0.2.2