[processor/k8sattributes]: apply attribute value from retrieved k8s object if original value is empty #36466
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Description
This PR extends the previous check whether an attribute value has not been present with a check for an empty value in the original resource attributes. This way, attributes, such as
k8s.namespace.name
will be set based on the retrieved kubernetes resource also if the original value has been set to e.g. an empty stringLink to tracking issue
Fixes #36373
Testing
Added unit tests