perf(batch): make Project concurrent to accelerate async exprs

[TennyZhuang]

I hereby agree to the terms of the RisingWave Labs, Inc. Contributor License Agreement.

What's changed and what's your intention?

As title

Please do some benchmark @wangrunji0408

Checklist For Contributors

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• I have demonstrated that backward compatibility is not broken by breaking changes and created issues to track deprecated features to be removed in the future. (Please refer to the issue)
• All checks passed in ./risedev check (or alias, ./risedev c)

Checklist For Reviewers

• I have requested macro/micro-benchmarks as this PR can affect performance substantially, and the results are shown.

Documentation

• My PR DOES NOT contain user-facing changes.

Click here for Documentation

Types of user-facing changes

Please keep the types that apply to your changes, and remove the others.

• Installation and deployment
• Connector (sources & sinks)
• SQL commands, functions, and operators
• RisingWave cluster configuration changes
• Other (please specify in the release note below)

Release note

[wangrunji0408]

👀

[codecov]

Codecov Report

Merging #8703 (f4267a3) into main (9e774bb) will increase coverage by 0.00%.
The diff coverage is 96.15%.

@@           Coverage Diff           @@
##             main    #8703   +/-   ##
=======================================
  Coverage   70.99%   70.99%           
=======================================
  Files        1166     1166           
  Lines      192565   192590   +25     
=======================================
+ Hits       136704   136726   +22     
- Misses      55861    55864    +3     

Flag	Coverage Δ
rust	70.99% <96.15%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/batch/src/executor/project.rs	77.51% <96.15%> (+4.44%)	⬆️

... and 2 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[fuyufjh]

For this PR I think you might need to check and post the benchmark result before merging.

- [ ] I have requested macro/micro-benchmarks as this PR can affect performance substantially, and the results are shown.
<!-- To manually trigger a benchmark, please check out [Notion](https://www.notion.so/risingwave-labs/Manually-trigger-nexmark-performance-dashboard-test-b784f1eae1cf48889b2645d020b6b7d3). -->

Check that link: https://www.notion.so/risingwave-labs/Manually-trigger-nexmark-performance-dashboard-test-b784f1eae1cf48889b2645d020b6b7d3

[xxchan]

🤣

[TennyZhuang]

🤣