fix Series.from_list/2 bugs · elixir-explorer/explorer@b7f90f7

test from_list/2 list of lists of one negative integer & one u64 (Explorer.Series.ListTest)

test from_list/2 list of lists of integers with one u64 (Explorer.Series.ListTest)

test from_list/2 list of lists of integers recursively - u64 (Explorer.Series.ListTest)

test from_list/2 list of lists of one integer & one u64 (Explorer.Series.ListTest)

test from_list/2 allows struct values - u64 integers (Explorer.Series.StructTest)

test from_list/2 allows struct values - list of u64 integers (Explorer.Series.StructTest)

test from_list/1 with u64 integers (Explorer.SeriesTest)

test from_list/1 u16 integers with dtype u8 - raises error (Explorer.SeriesTest)

test from_list/1 signed integers with dtype u64 - raises error (Explorer.SeriesTest)

test from_list/1 signed integers and u64 - raises error (Explorer.SeriesTest)

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