### Godot version

4 rc6

### System information

Windows 11, Vulkan, ryzen 9 5900X, rx 6700xt

### Issue description

If you export an array and then add a resource to the array, the scrollbar for the create resource drop down doesn't work.

A workaround would be to scroll with the mouse wheel, but it's still an issue and the list can get quite long, which can make mouse wheel scrolling tedious. 

### Steps to reproduce

1. Export an array (for example `@export var test: Array = []`)
2. Create a new element
3. Right click in the `<empty>` field
4. Try to use the scroll bar (it won't work)

### Minimal reproduction project

See "Steps to reproduce"
_THREAD_SAFE_METHOD_
	ERR_FAIL_INDEX_V(int(p_mode), FILE_DIALOG_MODE_SAVE_MAX, FAILED);
	Vector<Char16String> filter_names;
	Vector<Char16String> filter_exts;
	for (const String &E : p_filters) {
		Vector<String> tokens = E.split(";");
		if (tokens.size() >= 1) {
			String flt = tokens[0].strip_edges();
			int filter_slice_count = flt.get_slice_count(",");
			Vector<String> exts;
			for (int j = 0; j < filter_slice_count; j++) {
				String str = (flt.get_slice(",", j).strip_edges());
				if (!str.is_empty()) {
					exts.push_back(str);
				}
			}
			if (!exts.is_empty()) {
				String str = String(";").join(exts);
				filter_exts.push_back(str.utf16());
				if (tokens.size() == 2) {
					filter_names.push_back(tokens[1].strip_edges().utf16());
				} else {
					filter_names.push_back(str.utf16());
				}
			}
		}
	}
	if (filter_names.is_empty()) {