test(stream): add unit test for normalizing unmatched updates + fix typo

[kwannoel]

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What's changed and what's your intention?

Should construct with new_ops rather than old ops.

This has been included in the cherry-pick PRs for 2.1 and 2.2.

• feat(stream): normalize unmatched updates #20350  #20363
• feat(stream): normalize unmatched updates #20350  #20365

Checklist

• I have written necessary rustdoc comments.
• I have added necessary unit tests and integration tests.
• I have added test labels as necessary.
• I have added fuzzing tests or opened an issue to track them.
• My PR contains breaking changes.
• My PR changes performance-critical code, so I will run (micro) benchmarks and present the results.
• My PR contains critical fixes that are necessary to be merged into the latest release.

Documentation

• My PR needs documentation updates.

Release note