Allow skipping second plan during apply phase for Terragrunt

We use Terragrunt and noticed that Spacelift runs 2 plans during tracked runs for Terragrunt, which for a merge-before-apply workflow means we’re now up to 3 plans for a single change to be applied. The impact of this is low for a directory with a short plan time, but could be major for directories where a plan takes a longer time.

Support mentioned that the reason for this is because of Terragrunt’s mocked_outputs features and not wanting to risk faked values being used to create infrastructure. However, we do not use mocked_outputs at all in our Terragrunt. Would it be possible to let us opt-in to skip the extra plan phase and save some time during our apply phases since we understand the risks but also feel they don’t apply to our use case?