Fix T102620: Display dynamic socket label in uiTemplateNodeView

Some nodes, like Combine Color or the math nodes, label sockets
differently depending on the mode to be more descriptive.
`uiTemplateNodeView` now also uses this dynamic label rather than the
socket's name for labeling in the UI so the shown labels always match
the ones on the node itself.

Reviewed By: Hans Goudey

Differential Revision: http://developer.blender.org/D16563

source/blender/editors/space_node/node_templates.cc

@@ -830,7 +830,7 @@ static void ui_node_draw_input(
 
     sub = uiLayoutRow(sub, true);
     uiLayoutSetAlignment(sub, UI_LAYOUT_ALIGN_RIGHT);
-    uiItemL(sub, IFACE_(input.name), ICON_NONE);
+    uiItemL(sub, IFACE_(nodeSocketLabel(&input)), ICON_NONE);
   }
 
   if (dependency_loop) {