fix: do not shutdown client in "close"

Terminating client connections has to be done at the application level

bec_widgets/widgets/image/image_widget.py

@@ -457,7 +457,6 @@ class BECImageWidget(BECWidget, QWidget):
 
     def cleanup(self):
         self.fig.cleanup()
-        self.client.shutdown()
         self.toolbar.close()
         self.toolbar.deleteLater()
         return super().cleanup()

bec_widgets/widgets/jupyter_console/jupyter_console.py

@@ -63,8 +63,6 @@ class BECJupyterConsole(RichJupyterWidget):  # pragma: no cover:
 
     def closeEvent(self, event):
         self.shutdown_kernel()
-        if self.client:
-            self.client.shutdown()
 
 
 if __name__ == "__main__":  # pragma: no cover

bec_widgets/widgets/waveform/waveform_widget.py

@@ -561,7 +561,6 @@ class BECWaveformWidget(BECWidget, QWidget):
 
     def cleanup(self):
         self.fig.cleanup()
-        self.client.shutdown()
         return super().cleanup()