[Feature][OTel]: Move on invocation start and end to worker thread

### What would you like?

- Move on invocation start and end to worker thread, instead of main thread.
- Attach and de-attach to otel context

### Possible Implementation

_No response_

### Is this a breaking change?

No

### Does this require an RFC?

No

### Additional Context

_No response_

No files or tests are named. Locate the worker-thread invocation entry point and the existing OpenTelemetry start/end handling, then trace how context is currently attached and detached on the main thread. Done means invocation start and end run on the worker thread with the OpenTelemetry context correctly attached and detached.

Written by the indexing model from the issue text.