chore: add more types fixes

src/awesomewmdtl/visitors/node_fixer.tl

@@ -35,6 +35,14 @@ local node_fixer <const>: { string : New_Node_By_Name } = {
          },
       },
    },
+   ["naughty.widget.background"] = {
+      set_shape = {
+         parameters = {
+            { token = "variable", name = "self", types = { "Background" } },
+            { token = "variable", name = "shape", types = { "Gears_Shape_Function" } }, -- cannot discriminate a union between multiple function types: Gears_Shape_Function | function
+         },
+      },
+   },
 }
 
 local record Node_Fixer