feat: complete Pezkuwi rebrand - remove other networks

- Remove all Polkadot ecosystem networks from chain selector
- Keep only: Pezkuwi Relay Chain, Zagros Relay Chain, Pezkuwi Beta Testnet
- Update extension ID from polkadot-js to pezkuwi
- Update PhishingDetected to use Pezkuwi branding
- Update metadataMock: Westend → Zagros, WND → ZGR
- Disable Ledger chains (no Pezkuwi Ledger app yet)
- Update Identicon to handle pezkuwi icon theme
- Clean up translation files

Breaking: Extension now only supports Pezkuwi networks

packages/extension-chains/package.json

@@ -18,7 +18,7 @@
     "./packageDetect.cjs"
   ],
   "type": "module",
-  "version": "0.62.8",
+  "version": "0.62.12",
   "main": "index.js",
   "dependencies": {
     "@pezkuwi/extension-inject": "workspace:*",