fixed bug in Bedrock translation code and dramatically improved tracing for outbound LLM traffic (#601)

* dramatically improve LLM traces and fixed bug with Bedrock translation from claude code

* addressing comments

---------

Co-authored-by: Salman Paracha <salmanparacha@MacBook-Pro-288.local>

demos/use_cases/claude_code_router/config.yaml

@@ -20,13 +20,12 @@ llm_providers:
     routing_preferences:
       - name: code understanding
         description: understand and explain existing code snippets, functions, or libraries
-
   # Anthropic Models
   - model: anthropic/claude-sonnet-4-5
     default: true
     access_key: $ANTHROPIC_API_KEY
 
-  - model: anthropic/claude-3-haiku-20240307
+  - model: anthropic/claude-haiku-4-5
     access_key: $ANTHROPIC_API_KEY
 
   # Ollama Models
@@ -38,4 +37,7 @@ llm_providers:
 model_aliases:
   # Alias for a small faster Claude model
   arch.claude.code.small.fast:
-    target: claude-3-haiku-20240307
+    target: claude-haiku-4-5
+
+tracing:
+  random_sampling: 100