Inference - config update for Gemma (#2693)

## Description

takeru generated update, reflecting a config change for Gemma 4.

## Testing
- [x] Local build succeeds without errors (`mint dev`)
- [x] Local link check succeeds without errors (`mint broken-links`)
- [x] PR tests succeed

Author: jamie-rasmussen

inference/response-settings/reasoning.mdx

@@ -19,7 +19,7 @@ The following table lists the models on Serverless Inference that return reasoni
 | ---------------------------------------------- | ------------------- |
 | `deepseek-ai/DeepSeek-V4-Flash`                | Disabled by default |
 | `deepseek-ai/DeepSeek-V4-Pro`                  | Disabled by default |
-| `google/gemma-4-31B-it`                        | Enabled by default  |
+| `google/gemma-4-31B-it`                        | Disabled by default |
 | `MiniMaxAI/MiniMax-M2.5`                       | Always on           |
 | `moonshotai/Kimi-K2.6`                         | Always on           |
 | `moonshotai/Kimi-K2.5`                         | Always on           |