Note

Introduce useRampLastCryptoSelection to await wallet readiness and update RampCreateScene to show a spinner and disable crypto input until selection loads.

• UI:
  • Update src/components/scenes/RampCreateScene.tsx to use useRampLastCryptoSelection instead of local memoized selection.
  • Handle loading state: hide select-wallet button until loaded, show ActivityIndicator in crypto dropdown, and disable crypto amount input while loading.
• Hooks:
  • Add src/hooks/useRampLastCryptoSelection.ts using React Query to await account.waitForAllWallets() and return a validated selection with isLoading.

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