Upgrade react-native-harness to 1.3.0 (#279)

Upgrades harness from 1.1.0 to 1.3.0. Key improvements:

- Bridge RPC closes immediately on app disconnect instead of waiting for
timeout
- New internal RPC transport with heartbeat-based liveness detection
- Dead app connections fail fast instead of ambiguous "device did not
respond" after 90s

Should reduce intermittent CI flakiness.

Author: mfazekas

example/package.json

@@ -34,8 +34,8 @@
     "@react-native-community/cli": "18.0.0",
     "@react-native-community/cli-platform-android": "18.0.0",
     "@react-native-community/cli-platform-ios": "18.0.0",
-    "@react-native-harness/platform-android": "1.1.0",
-    "@react-native-harness/platform-apple": "1.1.0",
+    "@react-native-harness/platform-android": "1.3.0",
+    "@react-native-harness/platform-apple": "1.3.0",
     "@react-native/babel-preset": "0.79.2",
     "@react-native/metro-config": "0.79.2",
     "@react-native/typescript-config": "0.79.2",
@@ -44,7 +44,7 @@
     "babel-plugin-react-compiler": "^1.0.0",
     "deep-equal": "^2.2.3",
     "react-native-builder-bob": "^0.40.10",
-    "react-native-harness": "1.1.0"
+    "react-native-harness": "1.3.0"
   },
   "engines": {
     "node": ">=18"

example/src/tests/TestsPage.tsx

@@ -144,7 +144,7 @@ export default function TestsPage() {
     setTestStates((prev) => new Map(prev).set(key, { status: 'running' }));
 
     try {
-      await test.fn();
+      await (test.fn as () => void | Promise<void>)();
       setTestStates((prev) => new Map(prev).set(key, { status: 'passed' }));
     } catch (e) {
       const errorMessage = e instanceof Error ? e.message : String(e);