Itemfilter aggregateResults empty value duplication within group #1905
Description
Problem:
Results are duplicated in a non-matching aggregatedResult key
When
Issue happens if any theme in themes array for any of the items is changed to empty string when aggregateResults on themes is used.
Reproduce
Can be observed in this storybook link - https://eox-a.github.io/EOxElements/?path=/story/elements-eox-itemfilter--card-display&args=items[0].themes[0]:
