[utils] Fix time_seconds to use the provided TZ

[Lesmiscore]

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Fixes #6056

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#6056 (comment)

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[Grub4K]

.timestamp() does not respect the timezone offset, but how about just manually adding the offset to time.time?

def time_seconds(**kwargs):
    return time.time() + datetime.timedelta(**kwargs).total_seconds()

Maybe im misunderstanding what this function is trying to do? In my testing this yields the same results as your function. The old function just ignores the timezone offset.

[Lesmiscore]

That looks correct, how come didn't I come up with it

[pukkandan]

The docstring from the previous commit is useful