Debugger shows error if we stop the debugging after continue/stop

[pravesh-sharma]

To Reproduce

Steps to reproduce the behavior:

1. Select any function and start debugging.
2. Click on the continue/start button.
3. Again click on the continue/start button.
4. Click on the stop button.
5. Error will be displayed.

Expected behavior The debugger should stop and close like in normal cases.

Screenshots Attaching recording

https://github.com/pgadmin-org/pgadmin4/assets/111979571/88de0479-238f-4397-9f88-5d5ecc21f422

Desktop (please complete the following information):

• OS: macOS Sonoma
• Version: 8.6
• Mode: Desktop