[CP Staging] Revert "Fix: Circle icon showing behind back button on workspace pages in landscape mode"

[jasperhuangg]

Reverts #94218

$ #95863
$ #90374

cc @mountiny

[melvin-bot]

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[chatgpt-codex-connector]

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[jasperhuangg]

straight revert

[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.

[github-actions]

🚧 jasperhuangg has triggered a test Expensify/App build. You can view the workflow run here.

[github-actions]

🧪🧪 Use the links below to test this adhoc build on Android, iOS, and Web. Happy testing! 🧪🧪
Built from App PR #95999.

Android 🤖	iOS 🍎
https://ad-hoc-expensify-cash.s3.us-east-1.amazonaws.com/rock-artifacts/ad-hoc/rock-android-Adhoc-52c31d20d26-104f567-0466ec04e5faaa2e4fb481c4a7362e6ee1876048/index.html	https://ad-hoc-expensify-cash.s3.us-east-1.amazonaws.com/rock-artifacts/ad-hoc/rock-ios-device-AdHoc-52c31d2-104f567-94bf643448e56482f1bb9a19294207e394dd3675/index.html

Web 🕸️
https://95999.pr-testing.expensify.com

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👀 View the workflow run that generated this build 👀

[OSBotify]

🚀 Cherry-picked to staging by https://github.com/jasperhuangg in version: 9.4.33-4 🚀

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

[MelvinBot]

🤖 I reviewed the changes in this PR and no help site changes are required.

This PR reverts a UI/layout fix — it only changes internal navigation screen options (useSplitNavigatorScreenOptions.ts) and a style rule (src/styles/index.ts). It removes a contentStyle/backgroundColor (appBG) applied to split-navigator screens and a header bar background.

There are no new or changed features, settings, tab names, buttons, or user-facing workflows — nothing that any article under App/docs/articles describes. Because the help site documents product behavior and features rather than internal rendering/layout details, there is nothing to add, remove, or correct here.

No draft docs PR was created since there are no help site changes to make.

@jasperhuangg, since no user-facing behavior changed, there is no linked help site PR to review here. If you believe a docs update is warranted, let me know what behavior changed and I'll draft one.

[OSBotify]

🚀 Deployed to production by https://github.com/lakchote in version: 9.4.33-8 🚀

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

Bundle Size Analysis (Sentry):

• Android

[OSBotify]

🚀 Cherry-picked to staging by https://github.com/jasperhuangg in version: 9.4.34-0 🚀

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

[MelvinBot]

🤖 I reviewed the changes in this PR and no help site changes are required.

This PR reverts a UI/layout fix. It only changes internal navigation screen options (useSplitNavigatorScreenOptions.ts) and one style rule (src/styles/index.ts), removing a contentStyle/backgroundColor (appBG) applied to split-navigator screens and a header bar background.

There are no new or changed features, tab names, settings labels, buttons, or user-facing workflows — nothing that any article under App/docs/articles describes. The help site documents product behavior and features, not internal rendering/layout details, so there's nothing to add, remove, or correct.

No draft docs PR was created since there are no help site changes to make.

@jasperhuangg, since no user-facing behavior changed, there is no linked help site PR to review here. If you believe a docs update is warranted, let me know which behavior changed and I'll draft one.

[OSBotify]

🚀 Deployed to production by https://github.com/roryabraham in version: 9.4.34-14 🚀

platform	result
🕸 web 🕸	success ✅
🤖 android 🤖	failure ❌
🍎 iOS 🍎	failure ❌

[OSBotify]

🚀 Deployed to production by https://github.com/roryabraham in version: 9.4.34-14 🚀

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

Bundle Size Analysis (Sentry):

• Android