Span Details: Show profiling flamegraph consistent with the other items

On embedding a profiling flame graph in a trace, add another container around it. - to be consistent with the other groups of information: span attr, resource attr, events - the other groups are collapsed by default, yet the profiling flame graph is in full view - the title "Flame graph" is confusing (traces can be shown as a flamegraph too) <img width="1845" height="1500" alt="Image" src="https://github.com/user-attachments/assets/677799fd-ead3-451b-9860-3625e3524c00" />