fix: Fix Frame Processor SIGSEV crash in `VisionCameraScheduler::trig…

…ger` by locking mutex in `dispatchAsync` (#2591)

Add missing lock.

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

@@ -15,6 +15,7 @@ TSelf JVisionCameraScheduler::initHybrid(jni::alias_ref<jhybridobject> jThis) {
 }
 
 void JVisionCameraScheduler::dispatchAsync(const std::function<void()>& job) {
+  std::unique_lock<std::mutex> lock(_mutex);
   // 1. add job to queue
   _jobs.push(job);
   scheduleTrigger();