BUG - Release command doesn't create artefacts

[KajbaM]

Describe the bug

Testing east with new sysbuild configuration showed, that east doesn't correctly create artefacts when sysbuild is enabled. This is probably due to difference in path inside build folder.

I noticed there is some handling of sysbuild path (using domains file) inside helper functions used when handling runners and debug configuration, same should be done for release command

Firmware/Software Version

Using NCS 2.7.0 with east 0.22.0

Hardware Version

N/A

To Reproduce

• Enable sysbuild in your repository, you can do that by running west config --local build.sysbuild True
• Run east release
• Release will run normally, but it will only produce empty release folders and sub-folders (no artefacts inside).

Additional context

Folder structure change inside build folder is - build files are located one extra level of subfolders, what was before build/ is now build/<project_name>/