Fix extension-dapp resolution: upgrade to 0.62.20

The 0.62.19 package had a broken structure (missing types field,
wrong main entry pointing to non-existent index.js).

Version 0.62.20 has the correct package structure with:
- main: "./build/cjs/index.js"
- types: "./build/index.d.ts"

Updated resolutions in package.json to force 0.62.20 instead of
^0.62.18 which resolved to the broken 0.62.19.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/react-api/package.json

@@ -22,7 +22,7 @@
   "dependencies": {
     "@pezkuwi/api": "^16.5.9",
     "@pezkuwi/extension-compat-metamask": "^0.62.14",
-    "@pezkuwi/extension-dapp": "^0.62.14",
+    "@pezkuwi/extension-dapp": "0.62.20",
     "@pezkuwi/rpc-provider": "^16.5.9",
     "fflate": "^0.8.1",
     "rxjs": "^7.8.1"