[gnome-builder/wip/gtk4-port] plugins/terminal: fix expand property

[Christian Hergert <chergert src gnome org>]

commit 9855c097e209c5a2b8e0f6e21a309677a5eeda80
Author: Christian Hergert <chergert redhat com>
Date:   Tue Apr 26 19:44:20 2022 -0700

    plugins/terminal: fix expand property

 src/plugins/terminal/gbp-terminal-workspace-addin.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/plugins/terminal/gbp-terminal-workspace-addin.c 
b/src/plugins/terminal/gbp-terminal-workspace-addin.c
index df605d29b..602f60992 100644
--- a/src/plugins/terminal/gbp-terminal-workspace-addin.c
+++ b/src/plugins/terminal/gbp-terminal-workspace-addin.c
@@ -228,7 +228,8 @@ on_run_manager_run (GbpTerminalWorkspaceAddin *self,
                                          NULL);
       ide_pane_observe (g_object_new (IDE_TYPE_PANE,
                                       "child", self->run_terminal,
-                                      "expand", TRUE,
+                                      "vexpand", TRUE,
+                                      "hexpand", TRUE,
                                       "icon-name", "builder-run-start-symbolic",
                                       "title", _("Application Output"),
                                       NULL),