[FLINK-32680][streaming] Fix the messed up JobVertex name when the source nodes chained with a MultipleInput node.

[JunRuiLee]

What is the purpose of the change

There is a bug in generating the JobVertex name when the source nodes are chained with a MultipleInput node, resulting in a messed up JobVertex name.

Brief change log

When generating a JobVertex name, filter the chained source by the vertex ID.

Verifying this change

This change can be verified by StreamingJobGraphGeneratorTest#testNamingOfChainedMultipleInputs

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

• Dependencies (does it add or upgrade a dependency): (yes / no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (yes / no)
• The serializers: (yes / no / don't know)
• The runtime per-record code paths (performance sensitive): (yes / no / don't know)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / no / don't know)
• The S3 file system connector: (yes / no / don't know)

Documentation

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

[flinkbot]

CI report:

• 0ae3536 Azure: SUCCESS

Bot commands

The @flinkbot bot supports the following commands:

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

[wanglijie95]

Thanks for creating this PR @JunRuiLee. I left some comments, PTAL.

[JunRuiLee]

@wanglijie95 Thanks for CR and I've updated this pr, PTAL.

[wanglijie95]

LGTM