### Godot version

v4.2.dev4.official [549fcce5f]

### System information

Ubuntu 20.04 LTS

### Issue description

See title.

### Steps to reproduce

1. Create a new project
2. Create a csv file that includes the following
```
key,ar
key,placeholder
```
3. Add the generated `.translation` file to Project -> Project Settings... -> Localization
4. In Project -> Project Settings... -> Internationalization -> Locale, set `Test` to `ar`
5. Add a `LineEdit` node and type `-=[]{}`
6. Run the project, and notice that the text is on the right side, but the symbols are incorrectly in LTR (`-=[]{}`).  Correct output is `{}[]=-`
7. Back in the editor, add a single Arabic letter (any will do), and notice that `LineEdit` immediately (and correctly) flips the symbols, and the newly-added Arabic letter, to RTL.

**Notes**
- Identical behavior is seen with `TextEdit`.
- The purpose of steps 2-4 are to simulate an Arabic environment when the project is run, despite `OS.get_locale() == "en"` (or your system's current language).

### Minimal reproduction project

[rtlsymbols.zip](https://github.com/godotengine/godot/files/12525509/rtlsymbols.zip)
FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND_V(!fd, String());
	MutexLock lock(fd->mutex);
	Vector2i size = _get_size(fd, 16);
	ERR_FAIL_COND_V(!_ensure_cache_for_size(fd, size), String());
	return fd->font_name;
}
Dictionary TextServerAdvanced::_font_get_ot_name_strings(const RID &p_font_rid) const {
	FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND_V(!fd, Dictionary());
	MutexLock lock(fd->mutex);
	Vector2i size = _get_size(fd, 16);
	ERR_FAIL_COND_V(!_ensure_cache_for_size(fd, size), Dictionary());
	hb_face_t *hb_face = hb_font_get_face(fd->cache[size]->hb_handle);
	unsigned int num_entries = 0;
	const hb_ot_name_entry_t *names = hb_ot_name_list_names(hb_face, &num_entries);
	HashMap<String, Dictionary> names_for_lang;
	for (unsigned int i = 0; i < num_entries; i++) {
		String name;
		switch (names[i].name_id) {
			case HB_OT_NAME_ID_COPYRIGHT: {
				name = "copyright";
			} 
			case HB_OT_NAME_ID_FONT_FAMILY: {
				name = "family_name";