fix(table): align bitmap index ordering with Java (#601)

Bitmap lookup mixed serialized and logical key order, while floating-point keys did not follow Java's canonical NaN contract. This could select the wrong dictionary block and made equality pruning unnecessarily conservative.

Use a Bitmap-specific Java key codec and logical ordering, keep residual-sensitive floating predicates fail-open, and cover the behavior with Java and current-format fixtures.

Author: QuakeWang