[exporter/awsemfexporter] Fix: support empty dimension set in dimensions of metric definitions in the awsemfexporter #13766
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Description:
Add support to empty dimension set in
metric_definitions
dimensions
. The current behavior, which is wrong, is to ignore empty dimension sets and later drop metric groups with empty dimensions.Link to tracking Issue: #4739 and aws-observability/aws-otel-collector#1013
Testing:
Documentation: