[reportFilters] Inconsistent negation behavior when selecting filter members

[SunitVserv]

Hi team,

I'm encountering an inconsistency in how reportFilters generates the negation key when selecting filter members.

Scenario:
I have a field called "Fruits" that I drag into reportFilters. It contains 5 labels.

• When I select 3 out of 5 labels, the generated filter shows the excluded labels, and the filter includes "negation": true.

• When I select only 2 labels, the filter shows the selected labels, and no negation key is included (default behavior).

This makes the filtering behavior inconsistent and harder to control programmatically.

Observed Behavior

1. Selecting more than half of available labels → negation: true
2. Selecting less than or equal to half → negation key not present (treated as false)

Expected / Requested Behavior
I want to force negation to always be false, regardless of how many members are selected.
Is there a configuration, API option, or recommended approach to ensure negation is never automatically set to true?