Fix Issue with RGB Matrix not understanding the split keyboard (#22997)

keyboards/aidansmithdotdev/sango/info.json

@@ -20,6 +20,7 @@
     "processor": "RP2040",
     "rgb_matrix": {
         "driver": "ws2812",
+        "split_count": [36, 36],
         "layout": [
             {"matrix": [0, 1], "x": 60, "y": 0, "flags": 4},
             {"matrix": [0, 2], "x": 50, "y": 0, "flags": 4},
@@ -216,4 +217,4 @@
             ]
         }
     }
-}
+}