fix(langchain): Set agent name as gen_ai.agent.name for chat and tool spans
#12493
| Job | Run time |
|---|---|
| 2m 45s | |
| 3m 33s | |
| 2m 29s | |
| 4m 29s | |
| 2m 48s | |
| 2m 6s | |
| 3m 16s | |
| 4m 18s | |
| 2m 4s | |
| 2s | |
| 27m 50s |