Fix the restart of DFT+U.

Description

Fix the restart of DFT+U. The old version was leading to imprecise restarting as data where not read in binary but recomputed.

Checklist

• I have checked that my code follows the Octopus coding standards
• I have added tests for all the new features added in this request.

changed milestone to %12.2

added Bugfix Restart labels

@martin.lueders Do you think you could review this bugfix?

approved this merge request

mentioned in commit 145c65b3

merged