[AURON #2437] Support inner residual join conditions in native broadcast hash join

[weimingdiit]

Which issue does this PR close?

Closes #2437

Rationale for this change

Auron currently cannot execute Spark broadcast hash joins natively when an inner join contains a residual non-equi condition in addition to its equi-join keys.

Supporting these conditions improves native execution coverage for common broadcast join queries and keeps the condition evaluation inside the join operator.

What changes are included in this PR?

• Passes the BroadcastHashJoinExec residual condition to NativeBroadcastJoinExec.
• Converts the residual condition to the existing native JoinFilter representation.
• Adds the JoinFilter to the native broadcast join protobuf plan.
• Parses and passes the filter through the native planner.
• Evaluates the residual condition against candidate rows produced by the broadcast hash lookup.
• Supports both BuildLeft and BuildRight.
• Limits residual-condition support to inner broadcast hash joins.
• Adds Scala and Rust test coverage for both broadcast build sides.

Outer, semi, anti, null-aware anti, and broadcast nested-loop join condition support are not included.

Are there any user-facing changes?

No user-facing API changes. More inner broadcast hash joins with residual conditions can now be executed natively by Auron.

How was this patch tested?

UT.

Was this patch authored or co-authored using generative AI tooling?

• Yes
• No

Generated-by: OpenAI Codex (GPT-5)