Fix a crash when a driver variable targets an object and uses `data.shape_keys.key["name"].value` in its expression. The fix consists of adding an extra relation from the targeted object's `GEOMETRY` component to the driver evaluation. This ensures that its `data` pointer has been evaluated by the depsgraph and is safe to follow. This also resolves the concern raised on rB56407432a6aa. Reviewed by: brecht Differential Revision: https://developer.blender.org/D14956