Issue 452: Added the assertion for consistency check and evaluation frequency check

[harneet862]

For this PR, I added two assertions to validate the timing and evaluation consistency at the end of the training loop:

1. Duration consistency check: The total duration of training (submission time + logging time + evaluation time) is asserted to match the final evaluation result's total_duration, with a tolerance of 10 seconds.

2. Evaluation frequency check: Ensures the number of evaluations does not exceed the allowed evaluations based on the accumulated submission time and the workload's evaluation period.

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