* MiniMax: add M2.7 models and update default to M2.7
- Add MiniMax-M2.7 and MiniMax-M2.7-highspeed to provider catalog and model definitions
- Update default model from MiniMax-M2.5 to MiniMax-M2.7 across onboard, portal, and provider configs
- Update isModernMiniMaxModel to recognize M2.7 prefix
- Update all test fixtures to reflect M2.7 as default
Made-with: Cursor
* MiniMax: add extension test for model definitions
* update 2.7
* feat: add MiniMax M2.7 models and update default (#49691) (thanks @liyuan97)
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Co-authored-by: George Zhang <georgezhangtj97@gmail.com>
