Fix: Link drag search error with random value node from color socket

Dragging from a color socket would hit an assert in a debug build.
The node does not have a color mode currently, so use the vector mode
instead when connecting to a color socket.

source/blender/nodes/function/nodes/node_fn_random_value.cc

@@ -110,9 +110,8 @@ static std::optional<CustomDataType> node_type_from_other_socket(const bNodeSock
     case SOCK_INT:
       return CD_PROP_INT32;
     case SOCK_VECTOR:
-      return CD_PROP_FLOAT3;
     case SOCK_RGBA:
-      return CD_PROP_COLOR;
+      return CD_PROP_FLOAT3;
     default:
       return {};
   }