[No QA][CP Stg] Export ELECTRON_ENV to electronBuilder.config.js

[roryabraham]

Details

npm run desktop-build-staging -- --publish always (as executed here) is deploying the desktop app to production 😬

More context here

Fixed Issues

$ #7987

Tests

No way to test locally. Merge this PR and the desktop app should deploy to the staging S3 bucket.

QA Steps

None.

[github-actions]

⚠️ ⚠️ Heads up! This pull request has the CP Staging label. ⚠️ ⚠️
Merging it will cause it to be immediately deployed to staging, even if the open StagingDeployCash deploy checklist is locked.

[kidroca]

Shouldn't we do something about this:
#7996 (comment)

There's no point building for 3 platforms if they overwrite themselves
Whatever platform finishes last would get uploaded as NewExpensify.dmg

[roryabraham]

It seems like each platform create and overwrite the same file

I think you're right. Fortunately it's the universal that's uploaded last, so we should be okay in the meantime. We can follow-up with a separate issue. Maybe we can use some Cloudflare magic to deliver the correct app version based on user-agent.

[OSBotify]

🚀 Cherry-picked to staging by @roryabraham in version: 1.1.41-4 🚀

platform	result
🤖 android 🤖	success ✅
🖥 desktop 🖥	success ✅
🍎 iOS 🍎	success ✅
🕸 web 🕸	success ✅

[OSBotify]

🚀 Deployed to production by @francoisl in version: 1.1.41-6 🚀

platform	result
🤖 android 🤖	success ✅
🖥 desktop 🖥	success ✅
🍎 iOS 🍎	success ✅
🕸 web 🕸	success ✅