fix: correct magistral-medium-latest model configuration

- Fixed context window from 41k to 128k tokens
- Added supportsReasoningContent flag for proper reasoning formatting
- This addresses issues with reasoning content display and context limits

Fixes #7451

Author: roomote

packages/types/src/providers/mistral.ts

@@ -7,10 +7,11 @@ export const mistralDefaultModelId: MistralModelId = "codestral-latest"
 
 export const mistralModels = {
 	"magistral-medium-latest": {
-		maxTokens: 41_000,
-		contextWindow: 41_000,
+		maxTokens: 128_000,
+		contextWindow: 128_000,
 		supportsImages: false,
 		supportsPromptCache: false,
+		supportsReasoningBudget: true,
 		inputPrice: 2.0,
 		outputPrice: 5.0,
 	},