### Godot version

4.0.dev (ba9491f87)

### System information

Windows 11 Chrome 109.0.5414.75 (Official Build), iOS 16.2 Safari

### Issue description

When exporting a simple project for Web with any GDScript like following:
```gdscript
extends Control

```
will print the following error to the console:
```
USER ERROR: U_ILLEGAL_ARGUMENT_ERROR
   at: _is_confusable (modules\text_server_adv\text_server_adv.cpp:6151)
```

![image](https://user-images.githubusercontent.com/173001/214089154-d88f3f44-b670-41ec-9743-30627677968e.png)

For more complex project, following additional errors are showing:
```
USER ERROR: U_FILE_ACCESS_ERROR
   at: _spoof_check (modules\text_server_adv\text_server_adv.cpp:6174)
USER ERROR: U_ILLEGAL_ARGUMENT_ERROR
   at: _is_confusable (modules\text_server_adv\text_server_adv.cpp:6151)
```
When I've inserted `print_line(p_string)` at text_server_adv.cpp line 6172, following logs are collected:
![image](https://user-images.githubusercontent.com/173001/214091164-cb5af630-56d2-446e-b1c4-dc20066565d5.png)

It seems that the identifiers of *.gd files are printed to the console.


### Steps to reproduce

1. Open minimal reproduction project.
2. Exports to Web.
3. Open exported site with Chrome and open developer console.
4. Following error logs will be seen (reproduced): `USER ERROR: U_ILLEGAL_ARGUMENT_ERROR`

### Minimal reproduction project

[text_server_adv_error.zip](https://github.com/godotengine/godot/files/10481582/text_server_adv_error.zip)

for (const String &E : fallback_font_name) {
#endif
				SystemFontKey key = SystemFontKey(E, font_style & TextServer::FONT_ITALIC, font_weight, font_stretch, fdef, this);
				if (system_fonts.has(key)) {
					const SystemFontCache &sysf_cache = system_fonts[key];
					int best_score = 0;
					int best_match = -1;
					for (int face_idx = 0; face_idx < sysf_cache.var.size(); face_idx++) {
						const SystemFontCacheRec &F = sysf_cache.var[face_idx];
						if (unlikely(!_font_has_char(F.rid, text[0]))) {
							continue;
						}
						BitField<FontStyle> style = _font_get_style(F.rid);
						int weight = _font_get_weight(F.rid);
						int stretch = _font_get_stretch(F.rid);
						int score = (20 - Math::abs(weight - font_weight) / 50);
						score += (20 - Math::abs(stretch - font_stretch) / 10);
						if (bool(style & TextServer::FONT_ITALIC) == bool(font_style & TextServer::FONT_ITALIC)) {
							score += 30;
						}
						if (score >= best_score) {
							best_score = score;
							best_match = face_idx;
						}
						if (best_score == 70) {
							
						}
					}
					if (best_match != -1) {
						f = sysf_cache.var[best_match].rid;