feat(java): expose vector distance bounds

[nyl3532016]

Summary

• add optional lower and upper distance bounds to the Java Query builder
• pass both bounds through the Java/JNI scanner paths
• verify half-open distance range behavior for brute-force and IVF_FLAT searches

Testing

• ./mvnw -Dtest=JNITest,VectorSearchTest test
• ./mvnw spotless:check
• cargo clippy --tests --manifest-path ./lance-jni/Cargo.toml

[lance-gatekeeper]

✅ Gate recommendation: approve.

This exposes the existing half-open Rust distance-range contract through the Java builder and JNI paths. Routing the bounds into the native range query preserves lower-inclusive, upper-exclusive behavior for both flat and IVF_FLAT execution while leaving existing queries unbounded by default.