### Godot version

Godot 4.1-beta2

### System information

Manjaro Gnome, Intel Core i7-11800H

### Issue description

On a relatively modern laptop (Intel Core i7-11800H), in a scene with many scripted nodes (total of 900+ with roughly half of them scripted), adding or duplicating a node freezes the editor for several seconds. Godot 4.0.2 handles such scenes much better!

Here is a flame graph captured while repeatedly duplicating simple Marker2D nodes with Ctrl+D in a complicated scene:
![Screenshot from 2023-06-15 23-54-38](https://github.com/godotengine/godot/assets/2766569/d0019f17-9b82-4a26-9b47-71fa7a3bef3a)

Performance data file to use with hotspot v1.4.1 (relevant data starts at the 75-second mark and lasts about 20+ seconds):
[perf.data.perfparser.zip](https://github.com/godotengine/godot/files/11763700/perf.data.perfparser.zip)



### Steps to reproduce

1) Add 1000 nodes with a script attached.
2) Duplicate a node and witness lags.

Also affects scrolling the scene tree dock.

### Minimal reproduction project

[add_node_lags_repro.zip](https://github.com/godotengine/godot/files/11763731/add_node_lags_repro.zip)

singleton->file_dialogs.insert(p_dialog);
}
void EditorNode::_file_dialog_unregister(FileDialog *p_dialog) {
	singleton->file_dialogs.erase(p_dialog);
}
void EditorNode::_editor_file_dialog_register(EditorFileDialog *p_dialog) {
	singleton->editor_file_dialogs.insert(p_dialog);
}
void EditorNode::_editor_file_dialog_unregister(EditorFileDialog *p_dialog) {
	singleton->editor_file_dialogs.erase(p_dialog);
}
Vector<EditorNodeInitCallback> EditorNode::_init_callbacks;
void EditorNode::_begin_first_scan() {
	OS::get_singleton()->benchmark_begin_measure("editor_scan_and_import");
	EditorFileSystem::get_singleton()->scan();
}
Error EditorNode::export_preset(const String &p_preset, const String &p_path, bool p_debug, bool p_pack_only) {
	export_defer.preset = p_preset;
	export_defer.path = p_path;
	export_defer.debug = p_debug;
	export_defer.pack_only = p_pack_only;
	cmdline_export_mode = true;
	return OK;
}
void EditorNode::show_accept(const String &p_text, const String &p_title) {