fix: Use ThreadScope::WithClassLoader to also load custom JNI Types (…

…mrousavy#2461)

* fix: Fix `ThreadScope` in `runAsync`

* fix: Use `&`

* Update JVisionCameraScheduler.cpp

package/android/src/main/cpp/frameprocessor/java-bindings/JVisionCameraScheduler.cpp

@@ -22,10 +22,11 @@ void JVisionCameraScheduler::dispatchAsync(const std::function<void()>& job) {
 
 void JVisionCameraScheduler::scheduleTrigger() {
   // 2.1 Open a JNI Thread scope because this might be called from a C++ background Thread
-  jni::ThreadScope scope;
-  // 2.2 schedule `triggerUI` to be called on the java thread
-  static auto method = _javaPart->getClass()->getMethod<void()>("scheduleTrigger");
-  method(_javaPart.get());
+  jni::ThreadScope::WithClassLoader([&]() {
+    // 2.2 schedule `triggerUI` to be called on the java thread
+    static auto method = _javaPart->getClass()->getMethod<void()>("scheduleTrigger");
+    method(_javaPart.get());
+  });
 }
 
 void JVisionCameraScheduler::trigger() {