### 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
vb->add_child(template_info_label);
	template_info_label->set_autowrap_mode(TextServer::AUTOWRAP_WORD_SMART);
	status_panel = memnew(PanelContainer);
	status_panel->set_h_size_flags(Control::SIZE_FILL);
	status_panel->set_v_size_flags(Control::SIZE_EXPAND_FILL);
	status_panel->add_child(vb);
	/* Spacing */
	Control *spacing = memnew(Control);
	spacing->set_custom_minimum_size(Size2(0, 10 * EDSCALE));
	vb = memnew(VBoxContainer);
	vb->add_child(gc);
	vb->add_child(spacing);
	vb->add_child(status_panel);
	add_child(vb);
	/* Language */
	language_menu = memnew(OptionButton);
	language_menu->set_custom_minimum_size(Size2(350, 0) * EDSCALE);
	language_menu->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	gc->add_child(memnew(Label(TTR("Language:"))));
	gc->add_child(language_menu);
	default_language = -1;
	for (int i = 0; i < ScriptServer::get_language_count(); i++) {
		String lang = ScriptServer::get_language(i)->get_name();
		language_menu->add_item(lang);
		if (lang == "GDScript") {
			default_language = i;
		}
	}
	if (default_language >= 0) {
		language_menu->select(default_language);