fix: column indices in FFI partition evaluator #16480
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Which issue does this PR close?
Rationale for this change
There is a bug in how we compute the indices to create a schema for. It misses the last index and it can erroneously create an index 0 when none exists.
What changes are included in this PR?
Properly handle the
Nonecase when findingmaxindex.Are these changes tested?
Unit test will be added before marking this PR ready. Tested in datafusion-python.
Are there any user-facing changes?
No