[gnome-shell] appDisplay: don't change grid page on adaptToSize

[Florian Müllner <fmuellner src gnome org>]

commit 8eec7ae2d8a19ef267140bfb00cda974b55faddd
Author: Daniel García Moreno <danigm endlessos org>
Date:   Thu Nov 12 10:38:17 2020 +0100

    appDisplay: don't change grid page on adaptToSize
    
    If the adapt to size occurs after the grid page has been changed the
    page is set to zero. This patch just keep the current page with the same
    value that it has before.
    
    Fix https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3388

 js/ui/appDisplay.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 8e10de2d8f..6c7d1f4570 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -844,9 +844,9 @@ var BaseAppView = GObject.registerClass({
             this._pageIndicators.nPages !== this._grid.nPages) {
             Meta.later_add(Meta.LaterType.BEFORE_REDRAW, () => {
                 this._adjustment.value = 0;
-                this._grid.currentPage = 0;
+                this.goToPage(this._grid.currentPage);
                 this._pageIndicators.setNPages(this._grid.nPages);
-                this._pageIndicators.setCurrentPosition(0);
+                this._pageIndicators.setCurrentPosition(this._grid.currentPage);
                 return GLib.SOURCE_REMOVE;
             });
         }