Blueprint: allow ghost pipette & Factoripedia on preview entities

[MondSemmel]

TL;DR: Allow using the ghost pipette & Factoripedia on entities in the blueprint preview panel.

Context: I can hover items in the blueprint preview and even deactivate them via right-click, but I currently cannot use the pipette tool or open the Factoripedia for it.

Feature request: let me use the pipette tool and open the Factoripedia for interactions with that image preview: https://i.imgur.com/5qnxfIx.png

Example use case: I want to add an item from the visual preview to the blueprint icons.

Workarounds: I'm aware that I can already do what I request from the list of Components instead. But a) as a user, this UI limitation feels a bit arbitrary, and b) it's much easier to find the entity you care about in a visual preview rather than in the sorted Components list.