fix: rpc_server_dock fixture now spawns the server process

bec_widgets/cli/client.py

@@ -1588,6 +1588,10 @@ class BECDockArea(RPCBase, BECGuiClientMixin):
             extra(str): Extra docks that are in the dockarea but that are not mentioned in state will be added to the bottom of the dockarea, unless otherwise specified by the extra argument.
         """
 
+    @rpc_call
+    def get_docks_repr(self):
+        """Return dict, list and text representation of docks"""
+
     @rpc_call
     def add_dock(
         self,