function useSolanaAddress(): { solanaAddress: null | string;};
Hook to access the user’s primary Solana address.
Returns the first Solana address associated with the user’s account.
If the user has no Solana accounts, this will return null.Note: This hook always returns the first account (index 0) as the “primary” address.
If your users may have multiple Solana accounts and need to select between them, use
useSolanaAccounts() instead to get all accounts with metadata.