KCL: Autocomplete snippets for 'center' should suggest the origin (#7164)

Pattern functions and `polygon` both take a parameter `center` which
defaulted to [3.14, 3.14] for silly reasons. They now default to
[0, 0].

rust/kcl-lib/src/std/shapes.rs

@@ -328,7 +328,7 @@ pub async fn polygon(exec_state: &mut ExecState, args: Args) -> Result<KclValue,
         sketch_surface_or_group = { docs = "Plane or surface to sketch on" },
         radius = { docs = "The radius of the polygon", include_in_snippet = true },
         num_sides = { docs = "The number of sides in the polygon", include_in_snippet = true },
-        center = { docs = "The center point of the polygon", include_in_snippet = true },
+        center = { docs = "The center point of the polygon", snippet_value_array = ["0", "0"] },
         inscribed = { docs = "Whether the polygon is inscribed (true, the default) or circumscribed (false) about a circle with the specified radius" },
     },
     tags = ["sketch"]