Scale inventory image for scaled allfaces nodes (#10225)

The inventory image size of the inventory image of nodes with drawtype allfaces (and related) is scaled as well if visual_scale is set (previously, the inventory image size was always the same)

games/devtest/mods/testnodes/drawtypes.lua

@@ -514,6 +514,15 @@ local scale = function(subname, desc_double, desc_half)
 	minetest.register_node("testnodes:"..subname.."_half", def)
 end
 
+scale("allfaces",
+	S("Double-sized Allfaces Drawtype Test Node"),
+	S("Half-sized Allfaces Drawtype Test Node"))
+scale("allfaces_optional",
+	S("Double-sized Allfaces Optional Drawtype Test Node"),
+	S("Half-sized Allfaces Optional Drawtype Test Node"))
+scale("allfaces_optional_waving",
+	S("Double-sized Waving Allfaces Optional Drawtype Test Node"),
+	S("Half-sized Waving Allfaces Optional Drawtype Test Node"))
 scale("plantlike",
 	S("Double-sized Plantlike Drawtype Test Node"),
 	S("Half-sized Plantlike Drawtype Test Node"))

src/client/wieldmesh.cpp

@@ -562,6 +562,8 @@ void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result)
 			// add overlays
 			postProcessNodeMesh(mesh, f, false, false, nullptr,
 				&result->buffer_colors, true);
+			if (f.drawtype == NDT_ALLFACES)
+				scaleMesh(mesh, v3f(f.visual_scale));
 			break;
 		}
 		case NDT_PLANTLIKE: {