Refactor ActivityFilterBuilder & ExternalEventFilterBuilder #1803
Description
Checked for duplicates
Yes - I've already checked
Alternatives considered
Yes - and alternatives don't suffice
Related problems
No response
Describe the feature request
With the merge of #1652, the UI now has two very similar components, ActivityFilterBuilder.svelte and ExternalEventFilterBuilder.svelte. These two modal components can potentially be refactored down to a singular component that supports both Activity and External Event layer filtering.