use scale=1.0 in floats_tensor called in speech model testers (#17007)

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

tests/data2vec/test_modeling_data2vec_audio.py

@@ -116,7 +116,7 @@ class Data2VecAudioModelTester:
         self.adapter_output_seq_length = (self.output_seq_length - 1) // adapter_stride + 1
 
     def prepare_config_and_inputs(self):
-        input_values = floats_tensor([self.batch_size, self.seq_length], self.vocab_size)
+        input_values = floats_tensor([self.batch_size, self.seq_length], scale=1.0)
         attention_mask = random_attention_mask([self.batch_size, self.seq_length])
 
         config = self.get_config()