Ensure we set a higher timeout when generating images

[dkotter]

What?

Increases the timeout from 30s to 90s when generating images

Why?

Image generation can take 60+ seconds, particularly when using more advances modes like gpt-image-1. The default timeout the WP AI Client sets is 30 seconds so you're likely to run into timeouts before the image generation is done.

How?

Uses the using_request_options option to increase the timeout to 90 seconds when generating an image.

This was previously in place but was seemingly accidentally removed while making some other changes 😭

Use of AI Tools

None

Testing Instructions

1. Turn on the Image Generation Experiment
2. Ensure you have valid AI credentials
3. Create a post giving it some content and a title
4. Click the Generate featured image button in the post status sidebar
5. Ensure an image is generated and saved properly

[github-actions]

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Co-authored-by: dkotter <dkotter@git.wordpress.org>
Co-authored-by: jeffpaul <jeffpaul@git.wordpress.org>

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.69%. Comparing base (04c2df4) to head (56efce5).
⚠️ Report is 43 commits behind head on develop.

Files with missing lines	Patch %	Lines
includes/Abilities/Image/Generate_Image.php	0.00%	3 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop     #226      +/-   ##
=============================================
- Coverage      56.76%   56.69%   -0.07%     
  Complexity       505      505              
=============================================
  Files             32       32              
  Lines           2565     2568       +3     
=============================================
  Hits            1456     1456              
- Misses          1109     1112       +3     

Flag	Coverage Δ
unit	56.69% <0.00%> (-0.07%)	⬇️

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[jeffpaul]

This was previously in place but was seemingly accidentally removed while making some other changes 😭

[jeffpaul]

Works well in testing locally