Fix power after snapshot load

[onufer]

Description

Fix a bug where power setting would not be respected during snapshot database load

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Checklist

• This PR has only one purpose or idea.
• Tests have been added/updated to verify that the new/changed code works.

• The code style follows good practices.
• The commit message(s) follow good practices.

• The release notes (location doc/release/0.X.rst) are up-to-date with any bug fixes or new features.
• The documentation is still up-to-date in the doc folder.
• The dependencies are still up-to-date in setup.py.

[onufer]

@john-science , we have no unit tests for the snapshot load at all and its part of db load which is a pretty heavy lift. i think we should rely on internal in-use tests.

[john-science]

I don't see the cause of the problem. But the solution proposed seems fine, if the problem exists.