chore: main merge

Author: NathanWalker

test-app/runtime/src/main/cpp/com_tns_Runtime.cpp

@@ -3,6 +3,7 @@
 #include "NativeScriptException.h"
 #include "CallbackHandlers.h"
 #include "NativeScriptPlatform.h"
+#include "WorkerWrapper.h"
 #include <sstream>
 #include <android/log.h>
 
@@ -364,6 +365,11 @@ extern "C" JNIEXPORT void Java_com_tns_Runtime_TerminateRuntimeCallback(JNIEnv*
     auto isolate = runtime->GetIsolate();
     auto eventLoop = runtime->GetEventLoop();
 
+    // Terminate this runtime's child workers before disposing the isolate. Their
+    // Worker object persistents live in this isolate, so they must be released
+    // first - mirrors WorkerWrapper::BackgroundLooper's nested-worker teardown.
+    WorkerWrapper::TerminateChildren(isolate);
+
     {
         v8::Locker locker(isolate);
         v8::Isolate::Scope isolate_scope(isolate);

test-app/runtime/src/main/java/com/tns/Runtime.java

@@ -486,6 +486,9 @@ static void destroyMainRuntime() {
             mainRuntime = null;
         }
 
+        // Worker teardown happens natively in TerminateRuntimeCallback, which
+        // terminates this runtime's child workers (WorkerWrapper registry) before
+        // destroying the main isolate.
         TerminateRuntimeCallback(runtime.runtimeId);
     }