### Godot version

4.1.beta (7b1387ff2)

### System information

Mageia 9, Linux

### Issue description

When opening an empty project in latest `master`, I get these errors:
```
ERROR: Index p_idx = -1 is out of bounds (edited_scene.size() = 1).
   at: get_scene_path (editor/scu/../editor_data.cpp:880)
ERROR: Index p_idx = -1 is out of bounds (edited_scene.size() = 1).
   at: check_and_update_scene (editor/scu/../editor_data.cpp:683)
ERROR: Index p_idx = -1 is out of bounds (edited_scene.size() = 1).
   at: set_edited_scene (editor/scu/../editor_data.cpp:745)
```

Possibly related to recent changes to restore past sessions, but there's nothing to restore in this case?

### Steps to reproduce

- Create a new project, edit it
- Quit to project manager
- Re-open the newly created project -> errors

### Minimal reproduction project

Empty project.
node_tabs->set_tab_hidden(node_tabs->get_tab_idx_from_control(NodeDock::get_singleton()), profile->is_feature_disabled(EditorFeatureProfile::FEATURE_NODE_DOCK));
		
		bool fs_dock_disabled = profile->is_feature_disabled(EditorFeatureProfile::FEATURE_FILESYSTEM_DOCK);
		fs_tabs->set_tab_hidden(fs_tabs->get_tab_idx_from_control(FileSystemDock::get_singleton()), fs_dock_disabled);
		import_tabs->set_tab_hidden(import_tabs->get_tab_idx_from_control(ImportDock::get_singleton()), fs_dock_disabled || profile->is_feature_disabled(EditorFeatureProfile::FEATURE_IMPORT_DOCK));
		history_tabs->set_tab_hidden(history_tabs->get_tab_idx_from_control(history_dock), profile->is_feature_disabled(EditorFeatureProfile::FEATURE_HISTORY_DOCK));
		main_editor_buttons[EDITOR_3D]->set_visible(!profile->is_feature_disabled(EditorFeatureProfile::FEATURE_3D));
		main_editor_buttons[EDITOR_SCRIPT]->set_visible(!profile->is_feature_disabled(EditorFeatureProfile::FEATURE_SCRIPT));
		if (AssetLibraryEditorPlugin::is_available()) {
			main_editor_buttons[EDITOR_ASSETLIB]->set_visible(!profile->is_feature_disabled(EditorFeatureProfile::FEATURE_ASSET_LIB));
		}
		if ((profile->is_feature_disabled(EditorFeatureProfile::FEATURE_3D) && singleton->main_editor_buttons[EDITOR_3D]->is_pressed()) ||
				(profile->is_feature_disabled(EditorFeatureProfile::FEATURE_SCRIPT) && singleton->main_editor_buttons[EDITOR_SCRIPT]->is_pressed()) ||
				(AssetLibraryEditorPlugin::is_available() && profile->is_feature_disabled(EditorFeatureProfile::FEATURE_ASSET_LIB) && singleton->main_editor_buttons[EDITOR_ASSETLIB]->is_pressed())) {
			editor_select(EDITOR_2D);
		}
	} else {
		import_tabs->set_tab_hidden(import_tabs->get_tab_idx_from_control(ImportDock::get_singleton()), false);
		node_tabs->set_tab_hidden(node_tabs->get_tab_idx_from_control(NodeDock::get_singleton()), false);
		fs_tabs->set_tab_hidden(fs_tabs->get_tab_idx_from_control(FileSystemDock::get_singleton()), false);
		history_tabs->set_tab_hidden(history_tabs->get_tab_idx_from_control(history_dock), false);
		main_editor_buttons[EDITOR_3D]->set_visible(true);
		main_editor_buttons[EDITOR_SCRIPT]->set_visible(true);
		if (AssetLibraryEditorPlugin::is_available()) {
			main_editor_buttons[EDITOR_ASSETLIB]->set_visible(true);
		}
	}
	_update_dock_slots_visibility();
}
void EditorNode::_bind_methods() {