Fix defects overflow

[McHaillet]

I created a defects file (.mrc) to mask out dead pixel of the detector, but I ran into a very strange issue when trying to use it. When I run the first processing steps to get averages of my tilt movies (fs_motion_and_ctf), it seems only part of the averages have the defects correctly masked out, and it seemed completely random which ones had it correct. And, every time I rerun, the corrected files seem to randomly change without any pattern.

I had Claude go over the codebase and after some back-and-forth it managed to propose this fix... which fixed it 👍 According to Claude it a GPU memory overflow issue and it caused the observed race condition.

@dtegunov let me know if this fix makes sense to you

Summary by CodeRabbit

• Bug Fixes
  • Corrected GPU memory transfer sizing during defect correction processing to maintain consistency with slice-based operations, improving data processing accuracy.

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