clipboard kitten: fix copies to clipboard not working without the --wait-for-completion option

kittens/tui/handler.py

@@ -107,6 +107,9 @@ class Handler:
     def on_eot(self) -> None:
         pass
 
+    def on_writing_finished(self) -> None:
+        pass
+
     def on_kitty_cmd_response(self, response: Dict) -> None:
         pass
 

kittens/tui/loop.py

@@ -343,6 +343,7 @@ class Loop:
             self.write_buf: List[bytes] = []
             self.asycio_loop.remove_writer(fd)
             self.waiting_for_writes = False
+            handler.on_writing_finished()
         else:
             consumed = 0
             for i, buf in enumerate(self.write_buf):