Auto merge of #13918 - szeged:wpt-error-fixes, r=jdm

WebBluetooth fixes for the wpt tests

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Note: depends on #13612
WebBluetooth fixes for the failing wpt tests, excluding the `disconnect-during` tests cases, due to the lack of the event handling in the current implementation.
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] There are tests for these changes OR

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components/script/dom/webidls/BluetoothDevice.webidl

@@ -8,9 +8,13 @@
 interface BluetoothDevice {
     readonly attribute DOMString id;
     readonly attribute DOMString? name;
+    // TODO: remove this after BluetoothAdvertisingEvent implemented.
     readonly attribute BluetoothAdvertisingData adData;
     readonly attribute BluetoothRemoteGATTServer gatt;
-    // readonly attribute FrozenArray[] uuids;
+
+    // Promise<void> watchAdvertisements();
+    // void unwatchAdvertisements();
+    // readonly attribute boolean watchingAdvertisements;
 };
 
 // BluetoothDevice implements EventTarget;