revert usage of java8 bytecode within advice

Author: SylvainJuge

instrumentation/jetty/jetty-8.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/jetty/v8_0/JettyQueuedThreadPoolInstrumentation.java

@@ -11,6 +11,7 @@
 import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
 
 import io.opentelemetry.context.Context;
+import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
 import io.opentelemetry.javaagent.bootstrap.executors.ExecutorAdviceHelper;
 import io.opentelemetry.javaagent.bootstrap.executors.PropagatedContext;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
@@ -38,7 +39,7 @@ public static class DispatchAdvice {
 
     @Advice.OnMethodEnter(suppress = Throwable.class)
     public static PropagatedContext enterJobSubmit(@Advice.Argument(0) Runnable task) {
-      Context context = Context.current();
+      Context context = Java8BytecodeBridge.currentContext();
       if (ExecutorAdviceHelper.shouldPropagateContext(context, task)) {
         return ExecutorAdviceHelper.attachContextToTask(context, PROPAGATED_CONTEXT, task);
       }