In a capital where Republicans and Democrats agree on virtually nothing, it was notable when the House overwhelmingly declared on Wednesday that TikTok poses such a grave risk to national security that it must be forced to sell its U.S. operations to a non-Chinese owner. But that glosses over the deeper TikTok security problem, which the legislation does not fully address. In the four years this battle has gone on, it has become clear that the security threat posed by TikTok has far less to do with who owns it…