fix: preserve architecture in unpacked ASAR path (#1094)

electron/backend-paths.cjs

@@ -0,0 +1,8 @@
+function getUnpackedAppRoot(appRoot) {
+  return appRoot.replace(
+    /app(-[a-z0-9]+)?\.asar(?!\.unpacked)/,
+    "app$1.asar.unpacked",
+  );
+}
+
+module.exports = { getUnpackedAppRoot };