* fix: reject 0 raised to a negative exponent in formula PowExpression
evaluate_expression's PowExpression branch let base == 0 through the
base >= 0 check regardless of the exponent's sign, then called
math.pow(0, exponent). For a negative exponent this is a pole (division
by zero) and math.pow raises a raw ValueError: math domain error,
instead of the library's own raise_non_finite_error message that every
other non-finite case in this function produces.
Split the base >= 0 check into base > 0 (always fine) and base == 0
(fine only for a non-negative exponent), leaving the existing
base < 0 integer-exponent branch untouched. 0 raised to a non-negative
exponent still returns the expected value (0**0 == 1, 0**3 == 0).
Adds test_pow_expression to qdrant_client/local/tests/test_formula.py
covering the previously-passing cases plus the new negative-exponent
regression, alongside the existing negative-base non-integer-exponent
case.
* fix: match core's non-finite handling in formula pow
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Co-authored-by: George Panchuk <george.panchuk@qdrant.tech>
