Fix provider kwargs leak for mock device fields

Pop send_latency_ms and rgbw from kwargs in WLED, Adalight, and
AmbiLED providers so mock-only fields don't leak through to
non-mock client constructors.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/core/devices/adalight_provider.py

@@ -17,4 +17,6 @@ class AdalightDeviceProvider(SerialDeviceProvider):
         led_count = kwargs.pop("led_count", 0)
         baud_rate = kwargs.pop("baud_rate", None)
         kwargs.pop("use_ddp", None)  # Not applicable for serial
-        return AdalightClient(url, led_count=led_count, baud_rate=baud_rate, **kwargs)
+        kwargs.pop("send_latency_ms", None)
+        kwargs.pop("rgbw", None)
+        return AdalightClient(url, led_count=led_count, baud_rate=baud_rate)

server/src/wled_controller/core/devices/ambiled_provider.py

@@ -17,4 +17,6 @@ class AmbiLEDDeviceProvider(SerialDeviceProvider):
         led_count = kwargs.pop("led_count", 0)
         baud_rate = kwargs.pop("baud_rate", None)
         kwargs.pop("use_ddp", None)
-        return AmbiLEDClient(url, led_count=led_count, baud_rate=baud_rate, **kwargs)
+        kwargs.pop("send_latency_ms", None)
+        kwargs.pop("rgbw", None)
+        return AmbiLEDClient(url, led_count=led_count, baud_rate=baud_rate)

server/src/wled_controller/core/devices/wled_provider.py

@@ -36,6 +36,8 @@ class WLEDDeviceProvider(LEDDeviceProvider):
         from wled_controller.core.devices.wled_client import WLEDClient
         kwargs.pop("led_count", None)
         kwargs.pop("baud_rate", None)
+        kwargs.pop("send_latency_ms", None)
+        kwargs.pop("rgbw", None)
         return WLEDClient(url, **kwargs)
 
     async def check_health(self, url: str, http_client, prev_health=None) -> DeviceHealth: