Initialize current user's personal details when personalDetailsList is non empty and they can't be found

[marcaaron]

cc @Julesssss

Details

Since it's possible for a user to not have personal details set we need to provide an empty object as a fallback. In the cases where a user has a personalDetailsList but no own expensify_personalDetails bad things happen like what is linked in the issues.

Fixed Issues

Fixes https://github.com/Expensify/Expensify/issues/158699
Fixes #2247
Fixes #2253

Tests

1. Create a new account and domain for that account and update the domain admin's personal details
2. Invite a member to the domain and validate their account
3. Without making any changes to personal details (e.g. first name, avatar, etc) sign into Expensify.cash as the invited user
4. Verify they are able to access the settings page and update personal details
5. Verify they are able to leave comments without errors appearing in the JS console.

Logging in on main:

Logging in on this branch:

QA Steps

1. Create a new account and login verify settings and leaving comments works as expected.

Tested On

• Web
• Mobile Web
• Desktop
• iOS
• Android

Screenshots

Web

Mobile Web

Desktop

iOS

Android

[marcaaron]

There is one daily + a deploy blocker attached to this one 🚀

[Julesssss]

Resolved the issue for my broken users 👍

[Jag96]

LGTM