### Tested versions

Caused by [0d6300d269b818e6c3d3ea9cbc592480103aa6d0] Fix folder color not showing up in file dialogs
https://github.com/godotengine/godot/pull/84837
(git bisection)

### System information

Godot v4.3.dev (6faa5c6dc) - Fedora Linux 39 (Workstation Edition) - Wayland - Vulkan (Forward+) - dedicated AMD Radeon RX Vega (RADV VEGA10) () - AMD Ryzen 7 5800X 8-Core Processor (16 Threads)

### Issue description

When opening the export path, it results in a black popup.

![image](https://github.com/godotengine/godot/assets/270928/d67dee6a-f1e1-4bf3-8a3f-419554269f4a)


### Steps to reproduce

1. Open export settings
2. Add an export target
3. Try to select an export path

### Minimal reproduction project (MRP)

n/a
#include "editor_file_dialog.h"
#include "core/config/project_settings.h"
#include "core/io/file_access.h"
#include "core/os/keyboard.h"
#include "core/os/os.h"
#include "editor/dependency_editor.h"
#include "editor/editor_file_system.h"
#include "editor/editor_node.h"
#include "editor/editor_resource_preview.h"
#include "editor/editor_scale.h"
#include "editor/editor_settings.h"
#include "editor/filesystem_dock.h"
#include "scene/gui/center_container.h"
#include "scene/gui/label.h"
#include "scene/gui/margin_container.h"
#include "scene/gui/option_button.h"
#include "scene/gui/separator.h"
#include "scene/gui/split_container.h"
#include "scene/gui/texture_rect.h"
#include "servers/display_server.h"
EditorFileDialog::GetIconFunc EditorFileDialog::get_icon_func = nullptr;
EditorFileDialog::GetIconFunc EditorFileDialog::get_thumbnail_func = nullptr;
EditorFileDialog::RegisterFunc EditorFileDialog::register_func = nullptr;
EditorFileDialog::RegisterFunc EditorFileDialog::unregister_func = nullptr;
void EditorFileDialog::popup_file_dialog() {