Trace Exporter sanitizes invalid UTF-8

[dashpole]

Forked from open-telemetry/opentelemetry-collector-contrib#35723

Our collector exporter uses the SDK exporter under the hood, but that shouldn't actually matter. We probably want to make the trace client remove invalid UTF-8 similar to what we do for metrics:

opentelemetry-operations-go/exporter/metric/metric.go

Line 583 in 16bba4f

func sanitizeUTF8(s string) string {

. It probably needs to be done somewhere around here:

opentelemetry-operations-go/exporter/trace/trace_proto.go

Line 168 in 16bba4f

attributes := attributeWithLabelsFromResources(s)