### Godot version

4.0 dev Beta 10

### System information

MacBook Pro M1 Max

### Issue description

After I imported font.ttf file and move it from one folder to another under ://res godot suddenly crashed, and it still crashes after restart.

### Steps to reproduce

Import some font.ttf file and try to move into different folder

### Minimal reproduction project

N/A
FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND(!fd);
	MutexLock lock(fd->mutex);
	fd->language_support_overrides.erase(p_language);
}
PackedStringArray TextServerAdvanced::_font_get_language_support_overrides(const RID &p_font_rid) {
	FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND_V(!fd, PackedStringArray());
	MutexLock lock(fd->mutex);
	PackedStringArray out;
	for (const KeyValue<String, bool> &E : fd->language_support_overrides) {
		out.push_back(E.key);
	}
	return out;
}
bool TextServerAdvanced::_font_is_script_supported(const RID &p_font_rid, const String &p_script) const {
	FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND_V(!fd, false);
	MutexLock lock(fd->mutex);
	if (fd->script_support_overrides.has(p_script)) {
		return fd->script_support_overrides[p_script];
	} else {
		Vector2i size = _get_size(fd, 16);
		ERR_FAIL_COND_V(!_ensure_cache_for_size(fd, size), false);
		return fd->supported_scripts.has(hb_tag_from_string(p_script.ascii().get_data(), -1));
	}
}
void TextServerAdvanced::_font_set_script_support_override(const RID &p_font_rid, const String &p_script, bool p_supported) {