Small speed up to data entry flow steps

[bdraco]

Proposed change

Instead of checking if the flow is completed with
a linear tuple search each time, use a constant
set

Noticed while profiling startup

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[joostlek]

So if I understand correctly, this change will prevent creating this list for every flow it has to check?

[bdraco]

Yes and it won't have to do a linear search since it's a set now