fix: use to_bits() comparison for float types in eq_array (#24431)

[waterWang]

Problem

ScalarValue::eq_array is documented as an optimized equivalent of extracting an array element with ScalarValue::try_from_array and comparing the resulting scalars. However, for floating-point values eq_array uses IEEE equality (via the generic eq_array_primitive! macro) while ScalarValue::PartialEq compares bit representations, producing inconsistent results:

• Identical NaN bit patterns compare equal as ScalarValues but unequal through eq_array.
• +0.0 and -0.0 compare unequal as ScalarValues but equal through eq_array.

Fix

Replace the Float16, Float32, and Float64 branches of eq_array with custom to_bits() comparison, matching the semantics of ScalarValue::PartialEq for floats.

Closes #24431

[Jefffrey]

• closing for reason here fix: preserve inner list field name, nullability and metadata in array_slice (#24341) #24343 (comment)