[gnome-builder/wip/gtk4-port] plugins/meson-templates: fix missing window.ui for vala project

[Christian Hergert <chergert src gnome org>]

commit 8b02f33295bbe2a0b1ab49e69d3ae8a31def5c4a
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jun 9 09:49:42 2022 -0700

    plugins/meson-templates: fix missing window.ui for vala project

 src/plugins/meson-templates/gbp-meson-template-provider.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/plugins/meson-templates/gbp-meson-template-provider.c 
b/src/plugins/meson-templates/gbp-meson-template-provider.c
index 69006d9a0..b348a13c0 100644
--- a/src/plugins/meson-templates/gbp-meson-template-provider.c
+++ b/src/plugins/meson-templates/gbp-meson-template-provider.c
@@ -107,6 +107,7 @@ static GbpMesonTemplateExpansion gtk4_expansions[] = {
   { "src/hello.gresource.xml", "src/{{prefix}}.gresource.xml", IDE_STRV_INIT ("Vala") },
   { "src/main-gtk4.vala", "src/main.vala", IDE_STRV_INIT ("Vala") },
   { "src/meson-c-vala.build", "src/meson.build", IDE_STRV_INIT ("Vala") },
+  { "src/window-gtk4.ui", "src/window.ui", IDE_STRV_INIT ("Vala") },
   { "src/window-gtk4.vala", "src/window.vala", IDE_STRV_INIT ("Vala") },
 };