[CI] fix spack build (Azure) and migrate it to bake (GitHub)

[cz4rs]

• spack build was NOT migrated to docker bake and is currently failing on develop (logs, failure is not related to this issue)]. There's a bunch of issues in spack-package repo that could get it fixed and then it still needs to be migrated / integrated into bake schema.

Originally posted by @cz4rs in #2407

[cz4rs]

Possibly related: #1848 (is it done already?).

[cz4rs]

@JacobDomagala Seems like fixing DARMA-tasking/spack-package#25 is necessary to complete this issue. I have assigned that to you and cleaned up the description and DARMA-tasking/spack-package#25 a bit.