[Lens] Remove leaking abstraction from field switch in PopoverEditor

[mbondyra]

To fix after merging #75635 and fieldless column.
The PopoverEditor onClick handler has a piece of logic that depends on specific operationTypes. I could move it to the columnDefinition, but it requires bigger refactoring because on the top of that it depends on compatible field type – and field is something we plan to remove as a required parameter of column. For that reason, I think it's best to tackle it once we get the fieldless column in place

kibana/x-pack/plugins/lens/public/indexpattern_datasource/dimension_panel/popover_editor.tsx

Line 165 in 6e0b3f3

const isTermsToFilters =

const isTermsToFilters = selectedColumn?.operationType === 'terms' && operationType === 'filters';

and later on:
if (incompatibleSelectedOperationType && !isTermsToFilters) {...}

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[flash1293]

@mbondyra Seems like this is fixed already, can we close?

[mbondyra]

Yes, closing.