Allow to configure max output token for AI Assistant

As far as I’ve investigated using SAB v12.5 and Anthropic Claude 3.7, it seems to me that the max token output is 1024 limited.
When I tried to respond in Burmese language, the sentences are always incomplete. However, for Latin-based characters, it completes sentences.

My suggestion is to allow max token options / configure it in the AI Assistance setting.