fix: Correctly initialize context in inspector client init()

I'm not sure about this, but I think the code was initializing context_
with its own initial value (i.e. nullptr), rather than the isolate's
context. This seemed to trigger an error when sending a message to the
frontend, which this change fixed.

test-app/runtime/src/main/cpp/JsV8InspectorClient.cpp

@@ -192,8 +192,7 @@ void JsV8InspectorClient::init() {
 
  inspector_->contextCreated(v8_inspector::V8ContextInfo(context, JsV8InspectorClient::contextGroupId, v8_inspector::StringView()));
 
- v8::Persistent<v8::Context> persistentContext(context->GetIsolate(), JsV8InspectorClient::PersistentToLocal(isolate_, context_));
- context_.Reset(isolate_, persistentContext);
+ context_.Reset(isolate_, context);
 
  this->createInspectorSession(isolate_, context);
 }