Add watchdog service to RGBKB Sol 3 (#24786)

Due to power demands, the Sol 3 might get initially ignored or something by the attached device.

The solution is the enable watchdog, which would have the keyboard repoll the system to connect again.

I have been using watchdog for awhile, but given that the RGBKB developer never progressed #24279,
 I made this to add in the essential feature.

keyboards/rgbkb/sol3/rev1/keyboard.json

@@ -153,6 +153,8 @@
             "pin": "A9"
         },
         "transport": {
+            "watchdog": true,
+            "watchdog_timeout": 20000,
             "sync": {
                 "indicators": true,
                 "layer_state": true,