apiServiceRegistry|Failed to stop service ai-backend due to TypeError: Object has been destroyed

## Describe the bug

Whenever you close AI Playground, the error "apiServiceRegistry|Failed to stop service ai-backend due to TypeError: Object has been destroyed" will be added to "C:\Program Files\AI Playground\resources\aip-xxxx-xx-xx.log".

## To Reproduce

Steps to reproduce the behavior:
1. Close AI Playground.
2. Open "C:\Program Files\AI Playground\resources\aip-xxxx-xx-xx.log"
3. See error

## Expected behavior

## Screenshots

## Environment (please complete the following information):

- OS: [Windows11]
- GPU: [Intel Arc Graphics 128MB]
- CPU: [Ultra 5 125H]
- Version: [v2.0.4b-MTL-H]

## Additional context

Although this isn't a critical issue, I still believe you should fix it.