There was one make of smart TV that had embedded Slingplayer - at one time.
But so far as I know, that was the only one.
Many of us have been waiting for a long time for things like this, but they never come and doubtful if they ever will.
Smart TV's (not so smart, - at least my Bravia is not, very unhappy with it). Virtually nothing works properly on it and no apps except those that Sony want you to have (for your Country only)