Delay reading the err stream until the test is actually running to avoid losing output due to goofy race condition

Author: dmlloyd

devtools/cli/src/main/java/io/quarkus/cli/build/ExecuteUtil.java

@@ -51,7 +51,7 @@ public static int executeProcess(OutputOptionMixin output, String[] args, File p
         if (output.isCliTest()) {
             // We have to capture IO differently in tests..
             pb.output().consumeWith(br -> br.lines().forEach(output.out()::println))
-                    .error().transferTo(output.err())
+                    .error().consumeWith(br -> br.lines().forEach(output.err()::println))
                     .run();
         } else {
             pb.output().inherited()