[pilot] also wait for build processing when only distributing

[Cyberbeni]

Checklist

• I've run bundle exec rspec from the root directory to see all new and existing tests pass
• I've followed the fastlane code style and run bundle exec rubocop -a to ensure the code style is valid
• I've read the Contribution Guidelines
• I've updated the documentation if necessary.

Motivation and Context

Resolves #18072

Description

I'm already on my personal machine, so I couldn't test it and I'll be AFK for a week. I don't usually use ruby, so the syntax might need fixing but the general idea should be correct.

Testing Steps

First only upload the ipa with fastlane pilot (skip waiting for processing and don't set changelog)
fastlane pilot distribute_only

[Cyberbeni]

Could probably use some additional automated tests. I've tested the use case in the linked issue.

[google-cla]

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[joshdholtz]

@googlebot I consent.

[joshdholtz]

Thanks so much for making this change! I added tests on this so we should be good to go now 😊 Really appreciate the contribution ❤️

[fastlane-bot]

Hey @Cyberbeni 👋

Thank you for your contribution to fastlane and congrats on getting this pull request merged 🎉
The code change now lives in the master branch, however it wasn't released to RubyGems yet.
We usually ship about once a week, and your PR will be included in the next one.

Please let us know if this change requires an immediate release by adding a comment here 👍
We'll notify you once we shipped a new release with your changes 🚀

[fastlane-bot]

Congratulations! 🎉 This was released as part of fastlane 2.176.0 🚀