[core] Fix BSI reader predicate pruning for Long.MIN_VALUE boundary

[lxy-9602]

Purpose

Fix incorrect predicate pruning in BitSliceIndexBitmapFileIndex.Reader when the query literal is Long.MIN_VALUE.

Problem

The BSI reader uses Math.abs(value) to convert negative literals before querying the negative BSI. However, Math.abs(Long.MIN_VALUE) overflows and returns Long.MIN_VALUE itself (still negative) due to Java's two-complement arithmetic. This causes incorrect results for all comparison predicates:

Predicate	Expected	Actual (before fix)
x > Long.MIN_VALUE	all non-null rows	only positive rows (negative rows dropped)
x >= Long.MIN_VALUE	all non-null rows	only positive rows (negative rows dropped)
x < Long.MIN_VALUE	empty	negative rows incorrectly kept
x <= Long.MIN_VALUE	empty	negative rows incorrectly kept
x == Long.MIN_VALUE	empty	incorrect result
x != Long.MIN_VALUE	all non-null rows	incorrect result

Root Cause

Math.abs(Long.MIN_VALUE) == Long.MIN_VALUE — the only long value for which Math.abs overflows.

Fix

Add an early check for value == Long.MIN_VALUE in visitIn, visitNotIn, visitLessThan, visitLessOrEqual, visitGreaterThan, and visitGreaterOrEqual. Since the BSI writer cannot store Long.MIN_VALUE (the Appender rejects negative min), the index can never contain this value. Therefore:

• GT / GTE with Long.MIN_VALUE → return all non-null rows
• LT / LTE with Long.MIN_VALUE → return empty
• EQ / IN with Long.MIN_VALUE → return empty
• NEQ / NOT IN with Long.MIN_VALUE → return all non-null rows

Note: The writer-side issue (Math.abs(Long.MIN_VALUE) in StatsCollectList.collect() and serializedBytes()) is a known limitation — the writer rejects Long.MIN_VALUE with an IllegalArgumentException. A separate writer test is added to document this behavior.

Testing

• testReaderPredicatePruningWithLongMinValue — verifies all 6 predicates (>, >=, <, <=, ==, !=) with Long.MIN_VALUE as the query literal against data containing negative values.
• testWriterCannotHandleLongMinValue — documents that the writer throws IllegalArgumentException("values should be non-negative") when attempting to write Long.MIN_VALUE.