Fix issue where the command is attempting to write to CSV all at once.

[djalmaaraujo]

For sites that have a very large number of entries the command can get stalled / killed.

In this update we use a foreach loop to write to the output file incementally.

Please enter the commit message for your changes. Lines starting

Description

Changelog Description

Added

Removed

Fixed

Changed

Pre-review checklist

Please make sure the items below have been covered before requesting a review:

• This change works and has been tested locally or in Codespaces (or has an appropriate fallback).
• This change works and has been tested on a sandbox.
• This change has relevant unit tests (if applicable).
• This change uses a rollout method to ease with deployment (if applicable - especially for large scale actions that require writes).
• This change has relevant documentation additions / updates (if applicable).
• I've created a changelog description that aligns with the provided examples.

Pre-deploy checklist

• VIP staff: Ensure any alerts added/updated conform to internal standards (see internal documentation).

Steps to Test

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 29.46%. Comparing base (9f61e13) to head (3389ff7).
Report is 124 commits behind head on develop.

Files	Patch %	Lines
wp-cli/vip-migrations.php	0.00%	3 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #5578      +/-   ##
=============================================
+ Coverage      29.41%   29.46%   +0.04%     
- Complexity      4764     4765       +1     
=============================================
  Files            281      281              
  Lines          20544    20541       -3     
=============================================
+ Hits            6043     6052       +9     
+ Misses         14501    14489      -12     

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[github-actions]

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