hyperion-blueapi generates opentelemetry log spam

When running Hyperion UDC in blueapi, blueapi generates copious amounts of log spam in graylog, from opentelemetry warnings, such as

* The offending logging statement exists in bluesky - `run_engine.py._set` creates an opentelemetry span which applies all `Msg` attributes to the span regardless of whether the types are valid for opentelemetry.

## Acceptance Criteria
- Hyperion-blueapi no longer logs these messages