Watch mode 'stuck' after Ctrl+C

After running the network in watch mode using `npm run network:start` and interrupting the network using Ctrl+C the network is pruned but it doesn't get back to the terminal and it needs an extra Ctrl+C.

See the image below:

The file where this script is executed is [chaincode-dev-start.sh](https://github.com/GalaChain/sdk/blob/main/chain-cli/network/chaincode-dev-start.sh)

Start with chain-cli/network/chaincode-dev-start.sh and reproduce the issue using npm run network:start, then interrupt it with Ctrl+C. Check why the network is pruned but the terminal remains occupied; done means one Ctrl+C both prunes the network and returns control to the terminal.

Written by the indexing model from the issue text.