src, child_process: fix fatal error on Array prototype pollution

[Soumyadeep765]

Add an object check in ParseStdioOptions to prevent V8 from crashing with "v8::ToLocalChecked Empty MaybeLocal" when Array.prototype has been polluted. This replaces the fatal error with a controlled JavaScript TypeError (ERR_INVALID_ARG_TYPE).

Fixes: #56531

Assisted-by: Antigravity

[github-actions]

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[MikeMcC399]

This PR proposes a fix for #56531 which has the label good first issueIssues that are suitable for first-time contributors. attached.

AI use policy and guidelines says:

It's prohibited to use AI to automate fixes to issues marked as "good first issue". These issues are meant to help new human contributors, not an AI, learn about the code base and the contribution processes.

Soumyadeep765@a329954 however contains the following text which suggests that AI was used to automate the fix:

Signed-off-by: soumyadeep765 soumyadeepdas765@gmail.com
Assisted-by: Antigravity

The PR has not followed the Pull Request guide which advises to create a local branch, as described in Step 2: Branch. Changes have been made in the fork's main branch.

See Pull requests > Step 6: Test

Before submitting your changes in a pull request, always run the full Node.js test suite.

with further details under [BUILDING > Running tests](Running tests) including:

make lint/ vcbuild lint for linting only.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.15%. Comparing base (1e9fd95) to head (a329954).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #65791 +/- ##
==========================================
- Coverage 90.17% 90.15% -0.03% 
==========================================
Files 769 769 Lines 261448 261451 +3 Branches 49674 49655 -19 ==========================================
- Hits 235759 235702 -57 - Misses 16736 16770 +34 - Partials 8953 8979 +26 

Files with missing lines	Coverage Δ
src/process_wrap.cc	76.25% <100.00%> (+1.25%)	⬆️

... and 32 files with indirect coverage changes

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