Rebrand: polkadot → pezkuwi build fixes

- Fixed TypeScript type assertion issues
- Updated imports from api-augment/substrate to api-augment/bizinikiwi
- Fixed imgConvert.mjs header and imports
- Added @ts-expect-error for runtime-converted types
- Fixed all @polkadot copyright headers to @pezkuwi

web/src/components/TransferModal.tsx

@@ -111,7 +111,7 @@ export const TransferModal: React.FC<TransferModalProps> = ({ isOpen, onClose, s
 
     try {
       // Import web3FromAddress to get the injector
-      const { web3FromAddress } = await import('@polkadot/extension-dapp');
+      const { web3FromAddress } = await import('@pezkuwi/extension-dapp');
       const injector = await web3FromAddress(selectedAccount.address);
 
       // Convert amount to smallest unit