### Godot version

8449592d92eaeef990f5502b419d491ee3eeb7a6

### System information

Windows 11

### Issue description

Zooming in the script editor on an empty script freezes the entire editor for a few seconds, but if the file is large then it freezes for 4-5 seconds (which is unacceptable). Looks like a recent regression.

### Steps to reproduce

Just zoom in/out on the large script file.

### Minimal reproduction project

N/A
FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND(!fd);
	MutexLock lock(fd->mutex);
	Vector2i size = _get_size_outline(fd, p_size);
	ERR_FAIL_COND(!_ensure_cache_for_size(fd, size));
	HashMap<int32_t, FontGlyph> &gl = fd->cache[size]->glyph_map;
	gl[p_glyph].rect.position = p_offset;
	gl[p_glyph].found = true;
}
Vector2 TextServerAdvanced::_font_get_glyph_size(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph) const {