refactor(ui): share surface keyboard lifecycle

scripts/package-boundaries.json

@@ -268,5 +268,10 @@
     "exports": ["./ui/panels"],
     "modules": ["src/ui/panelDisclosure.js"],
     "external": []
+  },
+  "surface-keyboard": {
+    "exports": ["./ui/surfaces"],
+    "modules": ["src/ui/surfaceKeyboard.js"],
+    "external": []
   }
 }