paddle.Tensor has no attribute 'repeat' (#7376)

change `repeat` to `tile`

ppdet/modeling/transformers/position_encoding.py

@@ -96,8 +96,8 @@ class PositionEmbedding(nn.Layer):
             y_emb = self.row_embed(j)
             pos = paddle.concat(
                 [
-                    x_emb.unsqueeze(0).repeat(h, 1, 1),
-                    y_emb.unsqueeze(1).repeat(1, w, 1),
+                    x_emb.unsqueeze(0).tile([h, 1, 1]),
+                    y_emb.unsqueeze(1).tile([1, w, 1]),
                 ],
                 axis=-1).transpose([2, 0, 1]).unsqueeze(0)
             return pos