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

pezkuwi-sdk-ui/scripts/ipfsUpload.mjs

@@ -1,4 +1,4 @@
-// Copyright 2017-2025 @polkadot/apps authors & contributors
+// Copyright 2017-2025 @pezkuwi/apps authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
@@ -11,7 +11,7 @@ import cloudflare from 'dnslink-cloudflare';
 import fs from 'node:fs';
 
 // @ts-expect-error No definition file
-import { execSync } from '@polkadot/dev/scripts/util.mjs';
+import { execSync } from '@pezkuwi/dev/scripts/util.mjs';
 
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore Using ignore since the file won't be there in dev