### Godot version

6ca1bf9589404b7643d8bf6cfb114dacf537f67b

### System information

PopOS 22.04 

### Issue description

The lines drawn to show what the UV1 or UV2 maps look like are way too thick and end up taking up the entire viewport. 

_Beta 13_
![Screenshot from 2023-01-18 13-18-38](https://user-images.githubusercontent.com/16521339/213297096-2e164dc7-355a-4266-821b-99ff21853a77.png)

_Master with a8cbb6245b53955883d8cbeee43524f7bf9fa4af reverted (looks the same in beta 12 and below_
![Screenshot from 2023-01-18 13-16-51](https://user-images.githubusercontent.com/16521339/213297100-415ffde1-972b-428f-b847-5aa64a32c7d2.png)

Regression introduced by https://github.com/godotengine/godot/pull/69851
cc @dalexeev 

Fix is probably going to be removing the editor scaling here: https://github.com/godotengine/godot/blob/6ca1bf9589404b7643d8bf6cfb114dacf537f67b/editor/plugins/mesh_instance_3d_editor_plugin.cpp#L463

### Steps to reproduce

Click on an object with at least a UV map then select "mesh > View UV1"

### Minimal reproduction project

Not project specific
options->get_popup()->add_separator();
	options->get_popup()->add_item(TTR("View UV1"), MENU_OPTION_DEBUG_UV1);
	options->get_popup()->add_item(TTR("View UV2"), MENU_OPTION_DEBUG_UV2);
	options->get_popup()->add_item(TTR("Unwrap UV2 for Lightmap/AO"), MENU_OPTION_CREATE_UV2);
	options->get_popup()->connect("id_pressed", callable_mp(this, &MeshInstance3DEditor::_menu_option));
	outline_dialog = memnew(ConfirmationDialog);
	outline_dialog->set_title(TTR("Create Outline Mesh"));
	outline_dialog->set_ok_button_text(TTR("Create"));
	VBoxContainer *outline_dialog_vbc = memnew(VBoxContainer);
	outline_dialog->add_child(outline_dialog_vbc);
	
	outline_size = memnew(SpinBox);
	outline_size->set_min(0.001);
	outline_size->set_max(1024);
	outline_size->set_step(0.001);
	outline_size->set_value(0.05);
	outline_dialog_vbc->add_margin_child(TTR("Outline Size:"), outline_size);
	add_child(outline_dialog);
	outline_dialog->connect("confirmed", callable_mp(this, &MeshInstance3DEditor::_create_outline_mesh));
	err_dialog = memnew(AcceptDialog);
	add_child(err_dialog);
	debug_uv_dialog = memnew(AcceptDialog);
	debug_uv_dialog->set_title(TTR("UV Channel Debug"));
	add_child(debug_uv_dialog);
	debug_uv = memnew(Control);
	debug_uv->set_custom_minimum_size(Size2(600, 600) * EDSCALE);
	debug_uv->connect("draw", callable_mp(this, &MeshInstance3DEditor::_debug_uv_draw));
	debug_uv_dialog->add_child(debug_uv);
}
void MeshInstance3DEditorPlugin::edit(Object *p_object) {