Evaluation: Fix judge run display

[AkhileshNegi]

Is your feature request related to a problem?
v2 runs do not compute cosine similarity and do not interact with Langfuse. However, the run cards and detail view still display cosine columns and Langfuse trace links, which are empty or broken for judge runs.

Describe the solution you'd like

• Implement a check for is_judge_run in EvalRunCard, EvalRunsList, and the run detail page
• Remove cosine similarity summary and per-item cosine columns for judge runs
• Hide Langfuse trace links for judge runs while retaining the native score_trace_url path
• Keep the rendering path for v1 unchanged

Original issue

Is your feature request related to a problem?
v2 runs compute no cosine similarity and never touch Langfuse. The run cards and detail view still render cosine columns and Langfuse trace links, which will show up empty or broken for judge runs.

Describe the solution you'd like

• Branch on is_judge_run in EvalRunCard, EvalRunsList and the run detail page
• Hide cosine similarity summary and per-item cosine columns for judge runs
• Hide Langfuse trace links for judge runs; keep the native score_trace_url path
• Leave the v1 rendering path unchanged

Parent: #265