Fix time support for perievent

[wulfdewolf]

This short PR fixes the time support issue we had for compute_perievent when there are no spikes at all around the passed events.

We were passing the time support to the individual Ts objects, which were ultimately ignored when stored in the TsGroup:

for event_idx, event_time in enumerate(event_times):
        start_time = event_time - window[0]
        end_time = event_time + window[1]

        mask = (data.t >= start_time) & (data.t <= end_time)
        shifted_times = data.t[mask] - event_time

        aligned[event_idx] = nap.Ts(shifted_times, time_support=new_time_support)

    return nap.TsGroup(
        aligned, metadata={"events": event_times}, time_support=new_time_support
    )

That is now fixed by passing the new_time_support to the TsGroup.

Testing

I added two tests to capture this specifically

Related issues

#592

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
pynapple/process/perievent.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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