Fixing perievent

[gviejo]

Fixing prevent

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
pynapple/process/_process_functions.py	20.83% <100.00%> (-1.30%)	⬇️

... and 6 files with indirect coverage changes

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[BalzaniEdoardo]

The logic works, I think the code could be simplified and one loop can be removed entirely