[AGE-1372] [bug] When exporting traces in observabillity. The input column contains only N/A

[mmabrouk]

Example output:

Trace ID,Name,Span type,Inputs,Outputs,Duration,Cost,Usage,Timestamp,Status

4e3f4ac9-aed8-23ab-7535-59eb02aad812,generate,workflow,N/A,"I'm sorry, but there is no country called ""frabn."" If you meant ""France,"" the capital city is Paris.",1.58s,$0.000148,108,13:00:05 22 Nov 2024,SUCCESS

4e3f4ac9-aed8-23ab-fb16-243f20628a06,litellm_client,chat,N/A,"I'm sorry, but there is no country called ""frabn."" If you meant ""France,"" the capital city is Paris.",1.46s,$0.000054,54,13:00:06 22 Nov 2024,SUCCESS

0cf4bfdd-3c26-dabe-6906-e78975e35018,generate,workflow,N/A,"Exciting news! Our collaborative IDE empowers you to build AI agents using a groundbreaking programming language that blends plain English with essential coding concepts. Experience seamless forking, API deployment, and app sharing.

_{From SyncLinear.com | AGE-1372}