Patch "TB1" is obsolete
Perhaps I am missing something, but as far as I can tell, this patch is no longer needed and can be dropped: https://gitweb.torproject.org/tor-browser.git/commit/?h=tor-browser-31.5.3esr-4.5-1&id=9f26dcd16a02806a3fba1bef6991de9f402c55f3