feat(wasm-utxo): include CJS package.json in distribution files

Add dist/cjs/package.json to files list to ensure proper packaging and
module resolution for CommonJS imports.

Issue: BTC-0

Co-authored-by: llm-git <[email protected]>

Author: OttoAllmendinger

packages/wasm-utxo/package.json

@@ -10,7 +10,8 @@
   "license": "MIT",
   "files": [
     "dist/esm/js/**/*",
-    "dist/cjs/js/**/*"
+    "dist/cjs/js/**/*",
+    "dist/cjs/package.json"
   ],
   "exports": {
     ".": {