fix: correct nodeEnv type in WebpackDevServerOptions

[9romise]

What kind of change does this PR introduce?
bugfix

Did you add tests for your changes?
No
If relevant, did you update the documentation?
No
Summary
Fix the incorrect type.

Does this PR introduce a breaking change?
No

Other information

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: 9romise / name: Vida Xie (1c89d81)

[anshumanv]

LGTM

[anshumanv]

@9romise can you accept CLA?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.93%. Comparing base (31f634a) to head (1c89d81).
Report is 184 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (31f634a) and HEAD (1c89d81). Click for more details.

HEAD has 19 uploads less than BASE

Flag	BASE (31f634a)	HEAD (1c89d81)
	40	21

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4378      +/-   ##
==========================================
- Coverage   90.18%   83.93%   -6.26%     
==========================================
  Files          22        9      -13     
  Lines        1702     1413     -289     
  Branches      491      469      -22     
==========================================
- Hits         1535     1186     -349     
- Misses        167      227      +60     

see 4 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 62d335e...1c89d81. Read the comment docs.

[9romise]

@9romise can you accept CLA?

OK, I’ve already accepted it.

[snitin315]

@9romise Can you once rebase the PR, I've pushed a change to fix the CI on Node v23. #4381

[webpack-bot]

@9romise Thanks for your update.

I labeled the Pull Request so reviewers will review it again.

@anshumanv Please review the new changes.

[9romise]

@9romise Can you once rebase the PR, I've pushed a change to fix the CI on Node v23. #4381

@snitin315 Done