Ensure workspaces show after signing in

[Jag96]

Details

We weren't resetting a variable after signing out, which caused policies to not load after signing out and signing back in. This PR fixes that.

Fixed Issues

$ https://github.com/Expensify/Expensify/issues/173118#

Tests/QA

1. Launch web in an incognito window and sign in, confirm that after signing in the user's workspaces show on the Settings page
2. Sign out and sign back in, confirm that the workspaces show on the Settings page

Tested On

• Web
• Mobile Web
• Desktop
• iOS
• Android

Screenshots

Web/Desktop

Mobile

[OSBotify]

🚀 Deployed to staging in version: 1.0.82-11🚀

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

[OSBotify]

🚀 Deployed to production by @francoisl in version: 1.0.83-1 🚀

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