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

shared/lib/validator-pool.ts

@@ -1,5 +1,5 @@
-import { ApiPromise } from '@polkadot/api';
-import { InjectedAccountWithMeta } from '@polkadot/extension-inject/types';
+import { ApiPromise } from '@pezkuwi/api';
+import { InjectedAccountWithMeta } from '@pezkuwi/extension-inject/types';
 import { toast } from 'sonner';
 
 /**