[HOLD for payment 2023-12-06] Update the Sign On Page to only use dark theme

[grgia]

As part of theme switching, the landing/sign on flows will only use the dark theme.

[grgia]

not overdue

[grgia]

not overdue

[grgia]

@grgia testing

[melvin-bot]

Reviewing label has been removed, please complete the "BugZero Checklist".

[melvin-bot]

The solution for this issue has been 🚀 deployed to production 🚀 in version 1.4.4-3 and is now subject to a 7-day regression period 📆. Here is the list of pull requests that resolve this issue:

• SignInPage always dark mode #31636

If no regressions arise, payment will be issued on 2023-12-06. 🎊

After the hold period is over and BZ checklist items are completed, please complete any of the applicable payments for this issue, and check them off once done.

• External issue reporter
• Contributor that fixed the issue
• Contributor+ that helped on the issue and/or PR

[melvin-bot]

@grgia Eep! 4 days overdue now. Issues have feelings too...

[melvin-bot]

@grgia Still overdue 6 days?! Let's take care of this!

[grgia]

closing as complete