PY-18029 Race condition on async value evaluation fixed

`myCallbackHashMap` with the freshly requested async evaluation sequence number was accessed in `returnFullValue()` method before putting this sequence value into the map in `loadAsyncVariablesValues()` method. This resulted in NPE after switching to the new fast Thrift transport.

python/src/com/jetbrains/python/console/PydevConsoleCommunication.java

@@ -544,11 +544,11 @@ public class PydevConsoleCommunication extends AbstractConsoleCommunication impl
             evaluationExpressions.add(GetVariableCommand.composeName(asyncValue.getDebugValue()));
           }
           final int seq = getNextFullValueSeq();
+          myCallbackHashMap.put(seq, pyAsyncValues);
+
           // @alexander todo add specific exception to the method (previously processed by `checkError()`)
           myClient.loadFullValue(seq, evaluationExpressions);
 
-          myCallbackHashMap.put(seq, pyAsyncValues);
-
           // @alexander todo it was expected here that `loadFullValue()` might return `List<PyDebugValue>` somehow...
         }
         // @alexander todo uncomment probably