Add Sentry AI agent monitoring with telemetry configuration (#15301)

This PR implements Sentry's AI agent monitoring by:

- Configuring vercelAIIntegration with recordInputs and recordOutputs
options
- Adding sendDefaultPii to Sentry.init() for better debugging
- Creating a shared AI_TELEMETRY_CONFIG constant to DRY up the telemetry
configuration
- Adding experimental_telemetry to all AI SDK calls (generateText,
generateObject, streamText)

All AI operations are now fully monitored in Sentry with complete
input/output recording for debugging and performance analysis.

Note: Currently on Sentry v9.26.0, which is compatible with this
implementation. No breaking changes from the v9-to-v10 migration guide
were found in the codebase.

packages/twenty-server/src/engine/core-modules/ai/constants/ai-telemetry.const.ts

@@ -0,0 +1,5 @@
+export const AI_TELEMETRY_CONFIG = {
+  isEnabled: true,
+  recordInputs: true,
+  recordOutputs: true,
+};

packages/twenty-server/src/engine/core-modules/ai/services/ai.service.ts

@@ -2,6 +2,7 @@ import { Injectable } from '@nestjs/common';
 
 import { LanguageModel, type ModelMessage, streamText } from 'ai';
 
+import { AI_TELEMETRY_CONFIG } from 'src/engine/core-modules/ai/constants/ai-telemetry.const';
 import { AiModelRegistryService } from 'src/engine/core-modules/ai/services/ai-model-registry.service';
 
 @Injectable()
@@ -40,6 +41,7 @@ export class AiService {
       messages,
       temperature: options?.temperature,
       maxOutputTokens: options?.maxOutputTokens,
+      experimental_telemetry: AI_TELEMETRY_CONFIG,
     });
   }
 }