git: openjdk/jfx-sandbox: glass_gtk_bug_squashing: Fix background color should be white

[duke]

Changeset: 1f725e6f
Branch: glass_gtk_bug_squashing
Author:    Thiago Milczarek Sayao <thiago.sayao at gmail.com>
Date:      2025-04-14 14:09:54 +0000
URL:       https://git.openjdk.org/jfx-sandbox/commit/1f725e6fb46160513454a28aa20c13c78ea98ae6

Fix background color should be white

! modules/javafx.graphics/src/main/native-glass/gtk/GlassApplication.cpp
! modules/javafx.graphics/src/main/native-glass/gtk/glass_window.cpp
! modules/javafx.graphics/src/main/native-glass/gtk/glass_window.h