[FIX] Minor errors in gemini_api.py and internvl2.py.

[skyil7]

This PR fixes two minor errors in models.

Initialize self.response_persistent_file in gemini_api.py

• When we use GeminiAPI with continual_mode=False, It causes ValueError since self.response_persistent_file is not declared.
  

  lmms-eval/lmms_eval/models/gemini_api.py

  Lines 58 to 64 in 8821357

  	if self.continual_mode:
  	self.response_persistent_folder = response_persistent_folder
  	if not os.path.exists(self.response_persistent_folder):
  	os.makedirs(self.response_persistent_folder)
  	self.response_persistent_file = os.path.join(self.response_persistent_folder, f"{self.model_version}_response.json")
  	if os.path.exists(self.response_persistent_file):

• So I initialized self.response_persistent_file with an empty string ("") to prevent error.

Wrong variable name in internvl2.py

• In internvl2.py, self.model.chat() in line 316 requires num_patches_list variable.
• But in line 315, we declare num_patch_list instead of num_patches_list.
  

  lmms-eval/lmms_eval/models/internvl2.py

  Lines 313 to 316 in 8821357

  	else:
  	pixel_values = None
  	num_patch_list = None
  	response, history = self.model.chat(self.tokenizer, pixel_values, contexts, gen_kwargs, num_patches_list=num_patches_list, history=None, return_history=True)

• This seems a typo error, so I fixed it.

BTW, Happy New Year!

[pufanyi]

Hiiii!!! Thank you so much for your contribution!!! Happy New Year!!!