[gnome-shell] screenShield: Fix showing shield without animation

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit ceda02f2da963cb57a704d26c6df7e9df2cac4d6
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Jan 10 16:09:48 2020 +0100

    screenShield: Fix showing shield without animation
    
    Commit 24e631ffe2 changed the shield animation to use translation
    instead of position.
    
    However once the shield is raised, only an animation will lower it
    again, which means the shield is missing when it's supposed to be
    shown without animation (for example after an idle blank).
    
    Fix this by resetting the translation-y property in that case.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/927

 js/ui/screenShield.js | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/js/ui/screenShield.js b/js/ui/screenShield.js
index a33a96fae2..997ca29f54 100644
--- a/js/ui/screenShield.js
+++ b/js/ui/screenShield.js
@@ -1025,6 +1025,7 @@ var ScreenShield = class {
                 },
             });
         } else {
+            this._lockScreenGroup.translation_y = 0;
             this._lockScreenGroup.fixed_position_set = false;
             this._lockScreenShown({ fadeToBlack, animateFade: false });
         }