A redundant warning is thrown when changing the Additional Shader Channels value of the Canvas Component

How to reproduce:
1. Create a new project
2. Add a Canvas GameObject into the Scene (UI → Canvas)
3. Select the newly created Canvas GameObject
4. In the Inspector change the Canvas Component’s “Additional Shader Channels” option to any other value

Expected result: No warnings are thrown
Actual result: “Shader channels Normal and Tangent are most often used…” warning is thrown

Reproducible with: 2020.3.44f1, 2021.3.17f1, 2022.2.3f1, 2023.1.0a26

Reproduced on: macOS Ventura 13.1 (Intel), Windows 10

Note: 2022.2.3f1 and 2023.1.0a26 showed the warning, but the issue cannot be reproduced from scratch due to the value not allowing changes, bug report is in IN-29057