### 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)

int64_t interface_features = FEATURE_SIMPLE_LAYOUT | FEATURE_BIDI_LAYOUT | FEATURE_VERTICAL_LAYOUT | FEATURE_SHAPING | FEATURE_KASHIDA_JUSTIFICATION | FEATURE_BREAK_ITERATORS | FEATURE_FONT_BITMAP | FEATURE_FONT_VARIABLE | FEATURE_CONTEXT_SENSITIVE_CASE_CONVERSION | FEATURE_USE_SUPPORT_DATA;
#ifdef MODULE_FREETYPE_ENABLED
	interface_features |= FEATURE_FONT_DYNAMIC;
#endif
#ifdef MODULE_MSDFGEN_ENABLED
	interface_features |= FEATURE_FONT_MSDF;
#endif
	return interface_features;
}
void TextServerAdvanced::_free_rid(const RID &p_rid) {
	_THREAD_SAFE_METHOD_
	if (font_owner.owns(p_rid)) {
		FontAdvanced *fd = font_owner.get_or_null(p_rid);
		{
			MutexLock lock(fd->mutex);
			font_owner.free(p_rid);
		}
		memdelete(fd);
	} else if (shaped_owner.owns(p_rid)) {
		ShapedTextDataAdvanced *sd = shaped_owner.get_or_null(p_rid);
		{
			MutexLock lock(sd->mutex);
			shaped_owner.free(p_rid);
		}
		memdelete(sd);
	}
}
bool TextServerAdvanced::_has(const RID &p_rid) {