Add support for OpenTelemetry eBPF Profiler profile type

[brancz]

Summary

This PR adds support for the OpenTelemetry eBPF Profiler as a profile type option in the profile selector, enabling users to view on-CPU profiling data from this profiler.

Key Changes

• useAutoQuerySelector.ts: Added fallback logic to detect and select the go_opentelemetry_io_ebpf_profiler profile type when the primary parca_agent profile type is not available
• ProfileTypeSelector/index.tsx: Registered the new profile type in the well-known profiles map with display name "On-CPU" and appropriate help text

Implementation Details

The changes follow the existing pattern for profile type detection and registration:

• The auto-query selector now checks for the OpenTelemetry eBPF Profiler profile type as a secondary option after checking for parca_agent
• The profile type is properly labeled and documented in the UI for user clarity

https://claude.ai/code/session_01KiXtEvLCHpRVxPe7bPX7Yf

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