Update test to propagate context in thread.

Author: SoftlySplinter

exporters/sender/jdk/src/test/java/io/opentelemetry/exporter/sender/jdk/internal/JdkHttpSenderTest.java

@@ -27,6 +27,7 @@
 import java.util.concurrent.TimeUnit;
 import javax.net.ssl.SSLException;
 import org.assertj.core.api.InstanceOfAssertFactories;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -46,6 +47,8 @@ class JdkHttpSenderTest {
 
   @BeforeEach
   void setup() throws IOException, InterruptedException {
+    JdkHtttpUtil.setPropagateContextForTestingInDispatcher(true);
+
     // Can't directly spy on HttpClient for some reason, so create a real instance and a mock that
     // delegates to the real thing
     when(mockHttpClient.send(any(), any()))
@@ -66,6 +69,11 @@ void setup() throws IOException, InterruptedException {
             null);
   }
 
+  @AfterEach
+  void tearDown() {
+    JdkHtttpUtil.setPropagateContextForTestingInDispatcher(false);
+  }
+
   @Test
   void sendInternal_RetryableConnectTimeoutException() throws IOException, InterruptedException {
     assertThatThrownBy(() -> sender.sendInternal(new NoOpMarshaler()))