acp_thread: Disable Git's configured pager in agent terminals (#61732)
Applies the same fix as #43277 to Zed's native agent, which indeed fixes this issue for me locally (which I could only reproduce when specifically telling the agent to not use `--no-pager`, FWIW). Closes #42943 ## Self-Review Checklist: - [x] I've reviewed my own diff for quality, security, and reliability - [x] Unsafe blocks (if any) have justifying comments - [x] The content adheres to Zed's UI standards ([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) and [icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md) guidelines) - [ ] Tests cover the new/changed behavior - [x] Performance impact has been considered and is acceptable --- Release Notes: - Fixed hang when the Zed Agent runs a `git` command with a pager configured. --------- Co-authored-by: MrSubidubi <finn@zed.dev>