Stop using named (with counter) VT names due to https://bugs.openjdk.org/browse/JDK-8372410

Author: franz1981

extensions/virtual-threads/runtime/src/main/java/io/quarkus/virtual/threads/VirtualThreadsConfig.java

@@ -13,9 +13,9 @@
 public interface VirtualThreadsConfig {
 
     /**
-     * Virtual thread name prefix. The name of the virtual thread will be the prefix followed by a unique number.
+     * Virtual thread names. The name of the virtual thread will be the prefix followed by a unique number.
      */
-    @WithDefault("quarkus-virtual-thread-")
+    @WithDefault("quarkus-virtual-thread")
     Optional<String> namePrefix();
 
     /**

extensions/virtual-threads/runtime/src/main/java/io/quarkus/virtual/threads/VirtualThreadsRecorder.java

@@ -117,8 +117,10 @@ static ExecutorService newVirtualThreadPerTaskExecutorWithName(String prefix)
         Class<?> vtbClass = Class.forName("java.lang.Thread$Builder$OfVirtual");
         // .name()
         if (prefix != null) {
-            Method name = vtbClass.getMethod("name", String.class, long.class);
-            vtb = name.invoke(vtb, prefix, 0);
+            // why this is not using name(prefix, 0)?
+            // see https://bugs.openjdk.org/browse/JDK-8372410
+            Method name = vtbClass.getMethod("name", String.class);
+            vtb = name.invoke(vtb, prefix);
         }
         // .uncaughtExceptionHandler()
         Method uncaughtHandler = vtbClass.getMethod("uncaughtExceptionHandler", Thread.UncaughtExceptionHandler.class);