Clarify scope items are additive in docs and UI
## Problem/motivation Follow-up to: #3586195 Scope subscriptions are additive. If you subscribe to use case = "working with text" and tag = "campaign", you will get context items that are scoped to either of these. Meaning, the context item doesn't need *both* of them to be relevant. ## Solution - Review existing docs and update as needed - Review UI text and consider clarifying this to the user
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