resume step calculation is flawed

When calculating the steps when resuming i can't correctly set the steps. If i have previously done 5 epochs with 5000 steps and i set the new "max train epochs" to 10, instead of doing another 5000 steps, it does 10000 steps, so in total 15000 steps. If is set the "max train epoch" to 5, it says that steps need to be greater than initial steps...

I fixed it in my script, but this is definetly a bug.

Reproduce resume behavior using the reported 5-epoch, 5000-step case, then trace the resume step calculation in the training scripts. Verify that increasing the limit to 10 epochs schedules only the remaining 5000 steps and that setting it to 5 does not trigger an invalid-step error.

Written by the indexing model from the issue text.