fix hapi fleet bug in static mode (#34311)

Author: LiuChiachi

python/paddle/hapi/model.py

@@ -218,8 +218,6 @@ def _init_context():
             fluid.disable_dygraph()
             _init_context()
             fluid.enable_dygraph(place)
-        else:
-            _init_context()
 
     else:
         assert ("Only support CUDAPlace for now.")

python/paddle/tests/dist_hapi_mnist_static.py

@@ -59,6 +59,7 @@ def compute_accuracy(pred, gt):
                  'CPU testing is not supported')
 class TestDistTraning(unittest.TestCase):
     def test_static_multiple_gpus(self):
+        paddle.enable_static()
         device = set_device('gpu')
 
         im_shape = (-1, 1, 28, 28)