fix(picker): ship the dialog worker as the constrained ./worker artifact

The workspace files constraint keys worker bundles on the ./worker export
(lib/worker.cjs, the workflow-workerthread shape); the descriptive source
entry stays win32-dialog-worker.ts and tsdown renames the bundle.

packages/host/directory-picker-native/package.json

@@ -19,14 +19,18 @@
       "types": "./lib/types/client/index.d.ts",
       "default": "./lib/client.js"
     },
+    "./worker": {
+      "types": "./lib/types/win32-dialog-worker.d.ts",
+      "default": "./lib/worker.cjs"
+    },
     "./src/*": "./src/*",
     "./package.json": "./package.json"
   },
   "files": [
     "lib/index.js",
     "lib/invariant.js",
+    "lib/worker.cjs",
     "lib/client.js",
-    "lib/win32-dialog-worker.cjs",
     "lib/types/**/*.d.ts",
     "lib/types/**/*.d.ts.map",
     "src"