[gnome-shell] appDisplay: Extend faded edges beyond fade area

[Marge Bot <marge-bot src gnome org>]

commit 0ccdb4746fedfba4b64aa5e432c49e832271c98b
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed May 5 14:59:18 2021 +0200

    appDisplay: Extend faded edges beyond fade area
    
    Now that the fade effect was reverted to the old behavior by default,
    the app grid must opt-in extend faded edges beyond the regular fade
    area.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1831>

 js/ui/appDisplay.js | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index b926aab98b..2086102b4d 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -364,6 +364,9 @@ var BaseAppView = GObject.registerClass({
         }
 
         this._scrollView.update_fade_effect(fadeMargin);
+        const effect = this._scrollView.get_effect('fade');
+        if (effect)
+            effect.extend_fade_area = true;
     }
 
     _updateFade() {