deepseek-r1-671b only uses </think> at the end. This is not accounted for. #810
Description
Describe the bug
deepseek-r1-671b updated its chat template and only puts a </think> at the end. Thus, the thinking part is included in the answer in Perplexica.
To Reproduce
Ask deepseek-r1-671b a question via custom OpenAI.
Expected behavior
Thinking should remain in the thinking box.
deepseek-r1-0528 still works as intended.
Screenshots
