### Godot version

v4.1.beta3.mono.official [ada712e06]

### System information

Godot v4.1.beta3.mono - Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1660 Ti with Max-Q Design (NVIDIA; 31.0.15.3179) - Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz (12 Threads)

### Issue description

Vertical scrollbar can't be clicked and dragged in exported property dropdown selection. When you hover over a scrollbar it will light up, but can't be clicked and dragged like other scrollbars.

### Steps to reproduce

Export a property that has a lot of options to select like `[Export] Resource resource;`
In the inspector open property selection dropdown then try to click and drag vertical scrollbar.

https://github.com/godotengine/godot/assets/8630984/60d8f85b-c72a-46b9-bcf7-1f28e680111a



### Minimal reproduction project

NA
if (dir == ".") {
			dir = OS::get_singleton()->get_executable_path().get_base_dir();
		}
		dir = dir.replace("/", "\\");
		IShellItem *shellitem = nullptr;
		hr = SHCreateItemFromParsingName((LPCWSTR)dir.utf16().ptr(), nullptr, IID_IShellItem, (void **)&shellitem);
		if (SUCCEEDED(hr)) {
			pfd->SetDefaultFolder(shellitem);
			pfd->SetFolder(shellitem);
		}
		pfd->SetFileName((LPCWSTR)p_filename.utf16().ptr());
		pfd->SetFileTypes(filters.size(), filters.ptr());
		pfd->SetFileTypeIndex(0);
		WindowID window_id = _get_focused_window_or_popup();
		if (!windows.has(window_id)) {
			window_id = MAIN_WINDOW_ID;
		}
		hr = pfd->Show(windows[window_id].hWnd);
		UINT index = 0;
		pfd->GetFileTypeIndex(&index);
		if (SUCCEEDED(hr)) {
			Vector<String> file_names;
			if (p_mode == FILE_DIALOG_MODE_OPEN_FILES) {
				IShellItemArray *results;
				hr = static_cast<IFileOpenDialog *>(pfd)->GetResults(&results);
				if (SUCCEEDED(hr)) {
					DWORD count = 0;
					results->GetCount(&count);
					for (DWORD i = 0; i < count; i++) {
						IShellItem *result;