fix retry timelevels when amr.subcycle_mode = None

[zingale]

when we are not doing AMR subcycling and trigger a retry, we will advance all levels again at the new timestep. However, we were not properly resetting the timelevels in the StateData to reflect the new subcycled timestep.

PR summary

PR motivation

PR checklist

• [ ] test suite needs to be run on this PR
• [ ] this PR will change answers in the test suite to more than roundoff level
• [ ] all newly-added functions have docstrings as per the coding conventions
• [ ] the CHANGES file has been updated, if appropriate
• [ ] if appropriate, this change is described in the docs

[zingale]

This fixes #2820, but we need to make sure that there are not any other issues when doing retry w/o subcycling.