winrt: implement BleakScanner service_uuids kwarg

This provides an implementation for the BleakScanner service_uuids
kwarg in the WinRT backend. As explained in the code comment, it is
not possible to use the OS-provided filter mechanism for technical
reasons.

Fixes #230

CHANGELOG.rst

@@ -14,7 +14,7 @@ Added
 -----
 
 * Added ``service_uuids`` kwarg to  ``BleakScanner``. This can be used to work
-  around issue of scanning not working on macOS 12. Issue #635.
+  around issue of scanning not working on macOS 12. Fixes #230. Works around #635.
 
 Changed
 -------

bleak/backends/winrt/scanner.py

@@ -106,6 +106,20 @@ def _received_handler(
         # Get a "BLEDevice" from parse_event args
         device = self._parse_adv_data(raw_data)
 
+        # On Windows, we have to fake service UUID filtering. If we were to pass
+        # a BluetoothLEAdvertisementFilter to the BluetoothLEAdvertisementWatcher
+        # with the service UUIDs appropriately set, we would no longer receive
+        # scan response data (which commonly contains the local device name).
+        # So we have to do it like this instead.
+
+        if self._service_uuids:
+            for uuid in device.metadata["uuids"]:
+                if uuid in self._service_uuids:
+                    break
+            else:
+                # if there were no matching service uuids, the don't call the callback
+                return
+
         service_data = {}
 
         # Decode service data