### Godot version

4.0.3.stable

### System information

Windows 11, ask for more info if needed, I'm not sure what else would be needed here.

### Issue description

Issue also asked about on Godot Q&A (currently unresolved): https://ask.godotengine.org/155740/godot-automatically-creating-tabs-script-template-how-that

I have a script template that I use for all my scripts. In this template, I have an instance of a long line of spaces leading to a comment (this is my commenting method of choice, putting all comments on the right). Looks like (without underscores, would be spaces):
my code  _    _    _    _    _    _    _    _    _    _    _    # my comment

It worked perfectly in prior versions, though after switching to Godot 4 it has started converting my groups of spaces into tabs. It now looks like this (with the indent carrots), despite me only including spaces there in my .gd file:
my code  >    >    >    >    >    >    >    >    >       # my comment

I cannot find a way to disable this "feature" and believe it to truly be a bug. Mr. J. Godfrey (a Godot contributor/Q&A admin I think?) believes so as well. I have taken a look at the indentation section of the editor settings but this is a different feature. I like tabs for indents, and am not trying to change that. I just don't want Godot to auto-change my spaces into indents when it sees a group of them. I understand others may, so I'm proposing there is an option created for that (or please inform me of which one it is if it exists). When I create/edit this template in Notepad, I'm able to verify that it is indeed just normal spaces.

### Steps to reproduce

1) Go to this link and download the script template I created (this program won't let me attach a .gd for some reason):
https://drive.google.com/file/d/1oXPKAn_3DulkF2oIFNYTFV3QKuNKdGz-/view?usp=sharing

2) Load it into a folder called "Objects" within your script templates folder (you may need to create this folder, found at *Godot master folder location*...Godot Engine\editor_data\script_templates\

3) Create a new script in Godot 4.0.3.stable and select this file as the template. You may need to create it on a node, type shouldn't matter.

4) Open the new script and see that the "extends" line has a bunch of tab indents when it should just be spaces.

### Minimal reproduction project

N/A, this is trivial
template_info += " - " + sinfo.description;
	}
	template_info_label->set_text(template_info);
	template_info_label->add_theme_color_override("font_color", get_theme_color(SNAME("success_color"), SNAME("Editor")));
}
void ScriptCreateDialog::ok_pressed() {
	if (is_new_script_created) {
		_create_new();
	} else {
		_load_exist();
	}
	EditorSettings::get_singleton()->save();
	is_new_script_created = true;
	_update_dialog();
}
void ScriptCreateDialog::_create_new() {
	String cname_param = _get_class_name();
	Ref<Script> scr;
	const ScriptLanguage::ScriptTemplate sinfo = _get_current_template();
	String parent_class = parent_name->get_text();
	if (!parent_name->get_text().is_quoted() && !ClassDB::class_exists(parent_class) && !ScriptServer::is_global_class(parent_class)) {
		// 
		const EditorData::CustomType *type = EditorNode::get_editor_data().get_custom_type_by_name(parent_class);
		ERR_FAIL_NULL(type);
		parent_class = "\"" + type->script->get_path() + "\"";
	}
	scr = ScriptServer::get_language(language_menu->get_selected())->make_template(sinfo.content, cname_param, parent_class);
	if (has_named_classes) {
		String cname = class_name->get_text();
		if (cname.length()) {