Implemented add_pooling_layer arg to TFBertModel (#29603)

Implemented add_pooling_layer argument

src/transformers/models/bert/modeling_tf_bert.py

@@ -1182,10 +1182,10 @@ BERT_INPUTS_DOCSTRING = r"""
     BERT_START_DOCSTRING,
 )
 class TFBertModel(TFBertPreTrainedModel):
-    def __init__(self, config: BertConfig, *inputs, **kwargs):
+    def __init__(self, config: BertConfig, add_pooling_layer: bool = True, *inputs, **kwargs):
         super().__init__(config, *inputs, **kwargs)
 
-        self.bert = TFBertMainLayer(config, name="bert")
+        self.bert = TFBertMainLayer(config, add_pooling_layer, name="bert")
 
     @unpack_inputs
     @add_start_docstrings_to_model_forward(BERT_INPUTS_DOCSTRING.format("batch_size, sequence_length"))