Jimmy Kimmel’s late-night show is returning to ABC on Tuesday night after a tense standoff from remarks he made about the Trump administration’s response to the killing of the conservative activist Charlie Kirk. But about a quarter of the ABC stations in the United States won’t be airing it. Nexstar, a major owner of local ABC stations, said on Tuesday morning that it would pre-empt Mr. Kimmel’s show indefinitely. Sinclair, another owner of local affiliates, said the same on Monday evening, hours after Disney announced “Jimmy Kimmel Live!” would return. The stations owned by Nexstar and Sinclair represent a meaningful source of ad revenue for Mr. Kimmel’s show.