fix: Tuya TS0012_switch_module and TS0013_switch_module: support countdown (#8962)

Author: mrmaximas

src/devices/tuya.ts

@@ -7243,6 +7243,7 @@ export const definitions: DefinitionWithExtend[] = [
         extend: [
             tuya.modernExtend.tuyaOnOff({
                 switchType: true,
+                onOffCountdown: true,
                 endpoints: ["left", "right"],
             }),
         ],
@@ -7301,6 +7302,7 @@ export const definitions: DefinitionWithExtend[] = [
         extend: [
             tuya.modernExtend.tuyaOnOff({
                 switchType: true,
+                onOffCountdown: true,
                 endpoints: ["left", "center", "right"],
             }),
         ],