[gnome-text-editor] source-view: remove discrete events from scroll controller

[Christian Hergert <chergert src gnome org>]

commit 98de9f4f949299fa53b2e3c81c7eb1816324319d
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jul 20 22:17:00 2022 -0700

    source-view: remove discrete events from scroll controller
    
    This fixes an issue where we can break horizontal two-finger scroll
    gestures.
    
    Fixes #441

 src/editor-source-view.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/editor-source-view.c b/src/editor-source-view.c
index d7f6e40..c3b9326 100644
--- a/src/editor-source-view.c
+++ b/src/editor-source-view.c
@@ -925,7 +925,8 @@ editor_source_view_init (EditorSourceView *self)
                     self);
   gtk_widget_add_controller (GTK_WIDGET (self), controller);
 
-  controller = gtk_event_controller_scroll_new (GTK_EVENT_CONTROLLER_SCROLL_VERTICAL | 
GTK_EVENT_CONTROLLER_SCROLL_DISCRETE);
+  controller = gtk_event_controller_scroll_new (GTK_EVENT_CONTROLLER_SCROLL_VERTICAL);
+  gtk_event_controller_set_propagation_phase (controller, GTK_PHASE_CAPTURE);
   g_signal_connect (controller,
                     "scroll",
                     G_CALLBACK (on_scroll_scrolled_cb),