Space when dragging to shift what's being drawn

For anything that can be dragged with the mouse clicked down, Space should offset it while held down. We have this in a few places (like dragging the next preview segment in the Pen tool), but it should be universal across all dragging actions in every tool.

- Select tool:
- [ ] Transform cage resizing, skewing, and rotating
- [ ] Box and lasso area selection
- Artboard tool:
- [ ] Artboard drawing and resizing
- Gradient tool:
- [ ] Gradient line drawing and endpoint moving
- Path tool:
- [ ] Box and lasso area selection
- Line tool:
- [ ] Line drawing and endpoint moving
- Rectangle/Ellipse/Polygon tools:
- [ ] New shape drawing (and resizing after #1715)
- Text tool:
- [ ] Text area drawing and resizing
- And in the node graph:
- [ ] Box (and lasso after #2532) area selection

Commencez par examiner le comportement existant de Space lors du glissement du segment de prévisualisation suivant de l’outil Pen, puis retracez la manière dont le glissement est géré dans chacun des outils listés. Étendez ce comportement aux actions Select, Artboard, Gradient, Path, Line, shape, Text et node graph, et vérifiez que chaque élément de la checklist décale le contenu déplacé tant que Space est maintenue enfoncée.

Rédigé par le modèle d'indexation à partir du texte de l'issue.