fix: Fix HostObject destructors to make sure a JNI Environment is set up (#2462)

* fix: Fix HostObject destructors to make sure a JNI Environment is set up

* Use `reset` instead of `= nullptr`

* Format

* Format

package/android/src/main/cpp/MutableJByteBuffer.cpp

@@ -15,6 +15,9 @@ MutableJByteBuffer::MutableJByteBuffer(jni::alias_ref<jni::JByteBuffer> byteBuff
 }
 
 MutableJByteBuffer::~MutableJByteBuffer() noexcept {
+  // Hermes GC might destroy HostObjects on an arbitrary Thread which might not be
+  // connected to the JNI environment. To make sure fbjni can properly destroy
+  // the Java method, we connect to a JNI environment first.
   jni::ThreadScope::WithClassLoader([&] { _byteBuffer.reset(); });
 }
 
@@ -30,4 +33,4 @@ jni::global_ref<jni::JByteBuffer> MutableJByteBuffer::getByteBuffer() {
   return _byteBuffer;
 }
 
-} // namespace vision
+} // namespace vision