build: rebundle the example when library sources change

[janicduplessis]

Description

assembleRelease embeds the JS bundle through the React Native Gradle plugin's createBundle<Variant>JsAndAssets task. That task's source input tree is rooted at the app root, which is example/ (BundleHermesCTask.kt). In this hoisted pnpm workspace the library sources live at the repository root, so a change under src/ leaves the task UP-TO-DATE and the previous bundle ships.

The Android e2e check builds the release variant, so it could pass against stale library code; the worklets crash fix in #9 first looked green for exactly this reason.

Solution

Register src/ as an additional input of the bundle tasks in the example build.gradle, with relative path sensitivity so the cache key does not depend on the checkout location. The plugin's own tree still covers the example sources.

Test plan

./gradlew :app:createBundleReleaseJsAndAssets from example/android, appending a comment to src/index.tsx between runs:

• Without this change, the task reports UP-TO-DATE after the library change.
• With this change, the task executes after the library change and reports UP-TO-DATE when nothing changed.