fix(rpc): added annotations to pass py3.9 tests

bec_widgets/utils/bec_connector.py

@@ -1,4 +1,5 @@
 # pylint: disable = no-name-in-module,missing-module-docstring
+from __future__ import annotations
 
 import time
 from typing import Type, Optional

bec_widgets/widgets/figure/figure.py

@@ -1,6 +1,6 @@
+# pylint: disable = no-name-in-module,missing-module-docstring
 from __future__ import annotations
 
-# pylint: disable = no-name-in-module,missing-module-docstring
 import itertools
 import os
 import sys

bec_widgets/widgets/plots/waveform1d.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from collections import defaultdict
 from typing import Literal, Optional, Any