fix(nyz): fix PER indice repeat unittest bug

ding/worker/buffer/tests/test_middleware.py

@@ -88,7 +88,7 @@ def test_priority():
     buffer = DequeBuffer(size=10)
     buffer.use(PriorityExperienceReplay(buffer, buffer_size=10, IS_weight=True))
     for _ in range(N):
-        buffer.push(get_data())
+        buffer.push(get_data(), meta={'priority': 2.0})
     assert buffer.count() == N
     for _ in range(N):
         buffer.push(get_data(), meta={'priority': 2.0})