lib/log: do not include OTel 'Attributes' namespace in dev
Created by: bobheadxi
The Attributes
namespace is added to comply with OpenTelemetry's log data format - this is rather noisy in dev, and we already omit other OTel fields (Resource
) based on SRC_DEVELOPMENT
, so we continue that trend here
Test plan
(above test output includes https://github.com/sourcegraph/sourcegraph/pull/35131)