Dashboard - use wrong (default) Candles Connector after import

[nikspz]

Describe the bug

Dashboard - Failed to import Candles Connector config (for Bollinger V1), it uses default connector (kucoin)

Steps to reproduce bug

1. git clone https://github.com/hummingbot/deploy.git && cd deploy
2. bash setup_dev.sh
3. http://localhost:8501/
4. go to Bollinger V1 and change candles connector (to okx_perpetual)
5. refresh the page
6. click on not use default and Select config

Actual: Review Candles Connector is - default connector (kucoin)