Describe the bug
There are some issues with switching between dark and light mode where the block picker bottom sheet doesn't pick up the new color.

I also see this happening to the group block "AppenderButton".

Here, after switching to light mode, the block picker is still in dark mode.

To Reproduce
Steps to reproduce the behavior:

1. Make sure that theme is set to be system default in the application
2. Open the Editor
3. Leave the WPAndroid app and go to system settings where you want to change the theme color.
4. Return to the app - everything is refreshed but if you open inserter it will show in the wrong color (if you set dark, inserter will be light and opposite)

Expected behavior
Inserted should be colored with proper color