git: openjdk/jfx-sandbox: tsayao_gtk4_playground: - Use POPOVER

[duke]

Changeset: 363b14bf
Author:    Thiago Milczarek Sayão <thiago.sayao at gmail.com>
Date:      2022-01-26 18:31:44 +0000
URL:       https://git.openjdk.java.net/jfx-sandbox/commit/363b14bf7c25b9417aee224d2478d75a2e709f30

- Use POPOVER

! modules/javafx.graphics/src/main/native-glass/gtk4/glass_window.cpp
! modules/javafx.graphics/src/main/native-glass/gtk4/glass_window.h