### Godot version

v4.1.stable.mono.official [970459615]

### System information

Godot v4.1.stable.mono - Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1050 Ti (NVIDIA; 31.0.15.3179) - AMD Ryzen 3 3200G with Radeon Vega Graphics (4 Threads)

### Issue description

I have a scene with a large amount of InstanceMesh3D, StaticBody3D which are in a Map node. This scene does not cause any lags for me, but as soon as I expand the Map node, my scene starts to lag and it is impossible to work with the project at all. Before that I moved my project from 4.0.2.stable to 4.1.stable. The previous version did not cause such problems.

### Steps to reproduce

Create a scene of over +500 MeshInstance3D with any shape that is in a Node3D node. Try to open and close Node3D and you will see the performance drop.

### Minimal reproduction project

N/A
}
TreeItem::TreeItem(Tree *p_tree) {
	tree = p_tree;
}
TreeItem::~TreeItem() {
	_unlink_from_tree();
	_change_tree(nullptr);
	validate_cache();
	prev = nullptr;
	clear_children();
}
void Tree::_update_theme_item_cache() {
	Control::_update_theme_item_cache();
	theme_cache.panel_style = get_theme_stylebox(SNAME("panel"));
	theme_cache.focus_style = get_theme_stylebox(SNAME("focus"));
	theme_cache.font = get_theme_font(SNAME("font"));
	theme_cache.font_size = get_theme_font_size(SNAME("font_size"));
	theme_cache.tb_font = get_theme_font(SNAME("title_button_font"));
	theme_cache.tb_font_size = get_theme_font_size(SNAME("title_button_font_size"));
	theme_cache.selected = get_theme_stylebox(SNAME("selected"));
	theme_cache.selected_focus = get_theme_stylebox(SNAME("selected_focus"));
	theme_cache.cursor = get_theme_stylebox(SNAME("cursor"));
	theme_cache.cursor_unfocus = get_theme_stylebox(SNAME("cursor_unfocused"));
	theme_cache.button_pressed = get_theme_stylebox(SNAME("button_pressed"));
	theme_cache.checked = get_theme_icon(SNAME("checked"));
	theme_cache.unchecked = get_theme_icon(SNAME("unchecked"));
	theme_cache.indeterminate = get_theme_icon(SNAME("indeterminate"));
	theme_cache.arrow = get_theme_icon(SNAME("arrow"));
	theme_cache.arrow_collapsed = get_theme_icon(SNAME("arrow_collapsed"));
	theme_cache.arrow_collapsed_mirrored = get_theme_icon(SNAME("arrow_collapsed_mirrored"));