trying simpler self made menus to fix selection and focus issues on build

menus/scenes/menus/main_menu/new_main_menu.tscn

@@ -0,0 +1,31 @@
+[gd_scene load_steps=3 format=3 uid="uid://br8shfwk2lne0"]
+
+[ext_resource type="Script" uid="uid://brrt2uj47cmld" path="res://systems/ui/grab_focus.gd" id="1_c6nmr"]
+[ext_resource type="Script" uid="uid://ckywnolvqy6w1" path="res://systems/ui/new_main_menu.gd" id="1_vi8ha"]
+
+[node name="NewMainMenu" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_vi8ha")
+game_scene_path = "uid://dmkw8cmalm5k"
+
+[node name="Menus" type="MarginContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="StartGameButton" type="Button" parent="Menus"]
+layout_mode = 2
+size_flags_horizontal = 4
+size_flags_vertical = 4
+text = "Start game"
+script = ExtResource("1_c6nmr")
+
+[connection signal="pressed" from="Menus/StartGameButton" to="." method="on_new_game"]