[FLINK-32831][table-planner] RuntimeFilterProgram should aware join type when looking for the build side

[wanglijie95]

What is the purpose of the change

Currently, runtime filter program will try to look for an Exchange as build side to avoid affecting MultiInput. It will try to push down the runtime filter builder if the original build side is not Exchange.

Currenlty, the builder-push-down does not aware the join type, which may lead to incorrect results(For example, push down the builder to the right input of left-join).

We should only support following cases:

1. Inner join: builder can push to left + right input
2. semi join: builder can push to left + right input
3. left join: builder can only push to the left input
4. right join: builder can only push to the right input

Verifying this change

Add test testBuildSideIsLeftJoinWithoutExchange

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (no)
• If yes, how is the feature documented? (not applicable)

[wanglijie95]

Hi @lsyldliu, could you help to review this PR when you are free?

[flinkbot]

CI report:

• ca9c3ce Azure: SUCCESS

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[lsyldliu]

@wanglijie95 Thanks for your contribution, I left some comments.

[wanglijie95]

Thanks for review @lsyldliu , I 've addressed or replied your comments, PTAL.

[lsyldliu]

@wanglijie95 Thanks for your contribution, I left some comments.

[lsyldliu]

@wanglijie95 Thanks for contribution, LGTM

[wanglijie95]

CI fails due to FLINK-32751. @flinkbot run azure