### 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
FontFallback *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND_V(!fd, PackedInt32Array());
	MutexLock lock(fd->mutex);
	Vector2i size = _get_size_outline(fd, p_size);
	ERR_FAIL_COND_V(!_ensure_cache_for_size(fd, size), PackedInt32Array());
	ERR_FAIL_INDEX_V(p_texture_index, fd->cache[size]->textures.size(), PackedInt32Array());
	const ShelfPackTexture &tex = fd->cache[size]->textures[p_texture_index];
	PackedInt32Array ret;
	ret.resize(tex.shelves.size() * 4);
	int32_t *wr = ret.ptrw();
	int32_t i = 0;
	for (const Shelf &E : tex.shelves) {
		wr[i * 4] = E.x;
		wr[i * 4 + 1] = E.y;
		wr[i * 4 + 2] = E.w;
		wr[i * 4 + 3] = E.h;
		i++;
	}
	return ret;
}
PackedInt32Array TextServerFallback::_font_get_glyph_list(const RID &p_font_rid, const Vector2i &p_size) const {