NoBackground does not work for inventories

[ThisTestUser]

Pre-reporting checklist

• [X] I have searched existing issues and didn't find any previous reports of this bug.
• [X] This bug still happens in the latest version of Wurst. I've made sure my installation is up to date.
• [X] I have tried removing all other mods and the bug still happens.

Description

NoBackground no longer works for inventories and container screens.

Repro steps

1. Turn on NoBackground
2. Open the inventory, expecting to see a non-shadowed background

Wurst Client version

7.46.1

Minecraft version

1.21.1

Crash report (if applicable)

No response