### 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)

if (rewrite) {
			for (int j = 0; j < sd_glyphs[i].count; j++) {
				sd_glyphs_new[sd_shift + i + j] = sd_glyphs[i + j];
			}
		}
		if (sd_glyphs[i].count > 0) {
			char32_t c = ch[sd_glyphs[i].start - sd->start];
			if (c == 0xfffc) {
				i += (sd_glyphs[i].count - 1);
				continue;
			}
			if (c == 0x0009 || c == 0x000b) {
				sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_TAB;
			}
			if (is_whitespace(c)) {
				sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_SPACE;
			}
			if (c_punct_size 
				if (u_ispunct(c) && c != 0x005f) {
					sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_PUNCTUATION;
				}
			} else {
				for (int j = 0; j < c_punct_size; j++) {
					if (c_punct[j] == c) {
						sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_PUNCTUATION;
						
					}
				}
			}
			if (is_underscore(c)) {