fix: remove CRs when inject environment variables

[Keith-CY]

Injecting environment variables with CR makes the key mismatched.

[Keith-CY]

Packages with CR injected: https://github.com/nervosnetwork/neuron/actions/runs/10345635847
Packages without CR injected: https://github.com/nervosnetwork/neuron/actions/runs/10346108387

[homura]

Or can we inject an empty line like this?

echo "\n" >> packages/neuron-wallet/.env
echo "LOG_ENCRYPTION_PUBLIC_KEY=${{ secrets.LOG_ENCRYPTION_PUBLIC_KEY }}" >> packages/neuron-wallet/.env

[Keith-CY]

Or can we inject an empty line like this?

echo -en "\n"
echo "LOG_ENCRYPTION_PUBLIC_KEY=${{ secrets.LOG_ENCRYPTION_PUBLIC_KEY }}" >> packages/neuron-wallet/.env

This line is injected when the app is being packaged, IMO it's unnecessary to add the empty line

[Keith-CY]

Please have a review @yanguoyu @devchenyan