### 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
tex.dirty = false;
			}
			return fd->cache[size]->textures[gl[p_glyph | mod].texture_idx].texture->get_size();
		}
	}
	return Size2();
}
Dictionary TextServerFallback::_font_get_glyph_contours(const RID &p_font_rid, int64_t p_size, int64_t p_index) const {
	FontFallback *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND_V(!fd, Dictionary());
	MutexLock lock(fd->mutex);
	Vector2i size = _get_size(fd, p_size);
	ERR_FAIL_COND_V(!_ensure_cache_for_size(fd, size), Dictionary());
#ifdef MODULE_FREETYPE_ENABLED
	PackedVector3Array points;
	PackedInt32Array contours;
	int32_t index = p_index & 0xffffff; 
	int error = FT_Load_Glyph(fd->cache[size]->face, FT_Get_Char_Index(fd->cache[size]->face, index), FT_LOAD_NO_BITMAP | (fd->force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0));
	ERR_FAIL_COND_V(error, Dictionary());
	if (fd->embolden != 0.f) {
		FT_Pos strength = fd->embolden * p_size * 4; 
		FT_Outline_Embolden(&fd->cache[size]->face->glyph->outline, strength);
	}
	if (fd->transform != Transform2D()) {
		FT_Matrix mat = { FT_Fixed(fd->transform[0][0] * 65536), FT_Fixed(fd->transform[0][1] * 65536), FT_Fixed(fd->transform[1][0] * 65536), FT_Fixed(fd->transform[1][1] * 65536) }; 
		FT_Outline_Transform(&fd->cache[size]->face->glyph->outline, &mat);
	}
	double scale = (1.0 / 64.0) / fd->cache[size]->oversampling * fd->cache[size]->scale;
	if (fd->msdf) {
		scale = scale * (double)p_size / (double)fd->msdf_source_size;