core/wayland: thread-safety meta fixes + cleanups + hypr workaround

- fork go-wayland/client and modify to make it thread-safe internally
- use sync.Map and atomic values in many places to cut down on mutex
  boilerplate
- do not create extworkspace client unless explicitly requested

core/internal/server/loginctl/handlers_test.go

@@ -466,9 +466,7 @@ func TestHandleSubscribe(t *testing.T) {
 			SessionID: "1",
 			Locked:    false,
 		},
-		stateMutex:  sync.RWMutex{},
-		subscribers: make(map[string]chan SessionState),
-		subMutex:    sync.RWMutex{},
+		stateMutex: sync.RWMutex{},
 	}
 
 	conn := newMockNetConn()