git: openjdk/jfx-sandbox: metal: 8311640: Black color seen in Ensemble8 3D demos

[Jayathirth Rao D V]

Changeset: 421ef97a
Branch: metal
Author:    Jayathirth Rao D V <jdv at openjdk.org>
Date:      2025-04-23 17:57:06 +0000
URL:       https://git.openjdk.org/jfx-sandbox/commit/421ef97a56689f0d2674caffd8305d9bc9b874f0

8311640: Black color seen in Ensemble8 3D demos

! modules/javafx.graphics/src/main/native-prism-mtl/msl/PhongPS.metal