Add tracking issue for propagator config bug (#424)

Related issue in ADOT:
#421
Opened issue in OTel Python:
open-telemetry/opentelemetry-python#4679


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Co-authored-by: Jonathan Lee <107072447+jj22ee@users.noreply.github.com>

Author: srprash

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/aws_opentelemetry_distro.py

@@ -75,6 +75,7 @@ def _configure(self, **kwargs):
         if os.environ.get(OTEL_PROPAGATORS, None) is None:
             # xray is set after baggage in case xray propagator depends on the result of the baggage header extraction.
             os.environ.setdefault(OTEL_PROPAGATORS, "baggage,xray,tracecontext")
+            # Issue: https://github.com/open-telemetry/opentelemetry-python/issues/4679
             # We need to explicitly reload the opentelemetry.propagate module here
             # because this module initializes the default propagators when it loads very early in the chain.
             # Without reloading the OTEL_PROPAGATOR config from this distro won't take any effect.