[No QA] Update Translation model to GPT-5

[roryabraham]

Explanation of Change

GPT-5 is generally better for translations than 4o. Might as well upgrade before we start refining all of our translations.

Fixed Issues

related to #72168

Tests

• Covered by existing automated tests.

• Ran npx ts-node scripts/generateTranslations.ts --paths validateCodeForm.requestNewCode as a test.

• Verify that no errors appear in the JS console

Offline tests

None.

QA Steps

None

• Verify that no errors appear in the JS console

PR Author Checklist

• I linked the correct issue in the ### Fixed Issues section above
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Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

MacOS: Desktop

[melvin-bot]

@jasperhuangg Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

[roryabraham]

Bonus reason to make this change according to ChatGPT:

GPT-5 (~ $1.25 / 1M input, $10 / 1M output) vs GPT-4o (~ $2.50 / 1M input, $10 / 1M output)
→ For input tokens, GPT-5 is about half the cost of GPT-4o.
→ For output tokens, the quoted price is similar (both at ~$10 per million output tokens) in many sources.

[jasperhuangg]

I see we're not passing a reasoning parameter here, is that intentional?

[roryabraham]

Yeah it's not a required parameter so I'd say it's intentional to leave it to the default.

[roryabraham]

after chatting 1:1 with @jasperhuangg, we added reasoning_effort: 'low' to speed it up. Apparently we don't even use reasoning_effort: 'medium' for AgentZero, so this is probably good enough for translating one phrase at a time.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
see 3 files with indirect coverage changes

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[jasperhuangg]

Reviewer Checklist

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  • I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
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Screenshots/Videos

Android: HybridApp

Android: mWeb Chrome

iOS: HybridApp

iOS: mWeb Safari

MacOS: Chrome / Safari

MacOS: Desktop

[OSBotify]

✋ This PR was not deployed to staging yet because QA is ongoing. It will be automatically deployed to staging after the next production release.

[OSBotify]

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platform	result
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🤖 android 🤖	success ✅
🍎 iOS 🍎	success ✅

[OSBotify]

🚀 Deployed to production by https://github.com/mountiny in version: 9.2.33-4 🚀

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