History window does not persist theme

[iccub]

Description:

Please see this report https://community.brave.com/t/the-history-window-is-white-instead-of-purple/211984/3

Steps to Reproduce

1. Open the app in private browsing mode
2. Open history panel

Actual result:

Expected result:

Reproduces how often: [Easily reproduced, Intermittent Issue]

Brave Version:

Device details:

Website problems only:

• did you check with Brave Shields down?
• did you check in Safari/Firefox (WkWebView-based browsers)?

Additional Information

[srirambv]

Marking QA/No as this is not yet fixed on the current PR linked. Follow up issue #3719 logged