Dynamic Temperature HF loader support (#5174)

---------

Co-authored-by: oobabooga <112222186+oobabooga@users.noreply.github.com>

modules/llamacpp_hf.py

@@ -144,6 +144,9 @@ class LlamacppHF(PreTrainedModel):
                     self.model.n_tokens = longest_prefix
                     if len(seq_tensor) - longest_prefix > 0:
                         self.model.eval(seq[longest_prefix:])
+                    else:
+                        self.model.n_tokens -= 1
+                        self.model.eval([seq[-1]])
 
             if reset:
                 self.model.reset()