Add type-safety checks in navigation functions

[roryabraham]

Details

Makes sure that the navigationRef is ready before trying to access current.

Fixed Issues

Slack threads:

• https://expensify.slack.com/archives/C020EPP9B9A/p1632433314327000
• https://expensify.slack.com/archives/C020EPP9B9A/p1632433003319900
• https://expensify.slack.com/archives/C020EPP9B9A/p1632429118275000

Tests / QA Steps

1. Go to https://staging.expensify.com/ on a mobile device.
2. Sign into an account.
3. Press Set up my company for free
4. Verify that you are taken to the workspace modal in NewDot (no white screen or infinite loading spinner). If you did not already have a workspace for this account, a new one should be created. Otherwise, a new workspace should not be created.
5. Sign out from NewDot.
6. Go to https://staging.expensify.com/ on a mobile device.
7. Sign into an account.
8. Press Split bills & chat with friends
9. Verify that you are taken to the NewDot homepage without any issues.

Tested On

• Web
• Mobile Web
• Desktop
• iOS
• Android

Screenshots

Web

Mobile Web

Desktop

iOS

Android

[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.

[roryabraham]

Note: due to this bug, we're unable to successfully defer these navigation events to happen after the navigation ref is ready. So a side-effect of this is that the workspace modal will not be consistently opened when routing to NewDot from OldDot via Set up my company for free.

However, in the events when we previously had a white-screen error, we'll now just take the user to the NewDot homepage instead of crashing the app. Seems like an improvement to me.

[roryabraham]

Actually we don't need to CP Staging because we've got an unlocked checklist atm.

[luacmartins]

LGTM!

[OSBotify]

🚀 Deployed to staging by @roryabraham in version: 1.1.1-10 🚀

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

[OSBotify]

🚀 Deployed to production by @timszot in version: 1.1.2-7 🚀

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