Preserve profile name input focus

tests/controller_menu_accessibility_validation.gd

@@ -735,6 +735,13 @@ func _validate_profile_confirmation_focus() -> void:
 	page.call("activate")
 	page.call("set_interactive", true)
 	page.call("reset_controller_zone")
+	var name_edit := page.get("_name_edit") as LineEdit
+	name_edit.grab_focus()
+	page.call("_on_name_changed", "V")
+	_expect(
+		root.gui_get_focus_owner() == name_edit,
+		"Typing a profile name released the active name field.",
+	)
 	var suggestions := page.get("_suggestions") as HBoxContainer
 	var suggestion := Button.new()
 	suggestion.text = "alternate name"