fix/BasisTheoryReact initializing multiple times when rerender

[talberkoMelio]

Description

BasisTheoryReact initializing multiple times when rerender.
This is because the initialization is async and can take time, and meanwhile the hook can trigger again.
The solution is to add isLoading indicator.

Testing required outside of automated testing?

• Not Applicable

Screenshots (if appropriate):

• Not Applicable

Rollback / Rollforward Procedure

• Roll Forward
• Roll Back

Reviewer Checklist

• Description of Change
• Description of outside testing if applicable.
• Description of Roll Forward / Backward Procedure
• Documentation updated for Change

[talberkoMelio]

Hi @kevinperaza
Can you please take a look? This is a major bug we hope will be fixed and released so we can update the package.

[djejaquino]

#232 closes this