Reproduction steps:
1. Open the attached "repro_IN-55375.zip" project
2. Open the "Test" Scene
3. Build the project ("File > Build And Run")
4. Once the build completes, observe a red sphere in the Player - this means that "ValidateMaterial" was not called during the build process
5. Exit the Player
6. Open either the Scene or the Game view and notice (in the Console) that "ValidateMaterial" is called
7. Build the project
8. Notice that, while the project is building, "ValidateMaterial" is called again
9. Once the build completes, observe a green sphere in the Player

Expected result: "ValidateMaterial" is always called for every Material before being written to a build
Actual result: "ValidateMaterial" is only called if Material is visible at the time of a build

Reproduced with: 2021.3.31f1, 2022.3.10f1, 2023.1.16f1, 2023.2.0b12, 2023.3.0a8

Reproduced on: Windows 10 (22H2)
Not reproduced on: No other environments tested

Notes:
* Reproducible in the Player

* If you invert the changes done to the "MaleBody_Test" material, open the "Instantiated" Scene, and enter the Play Mode, the "ValidateMaterial" is not called and the red sphere is shown