tui: patch crossterm for better color queries (#5935)

See
https://github.com/crossterm-rs/crossterm/compare/master...nornagon:crossterm:nornagon/color-query

This patches crossterm to add support for querying fg/bg color as part
of the crossterm event loop, which fixes some issues where this query
would fight with other input.

- dragging screenshots into the cli would sometimes paste half of the
pathname instead of being recognized as an image
(https://github.com/openai/codex/issues/5603)
- Fixes https://github.com/openai/codex/issues/4945

codex-rs/Cargo.toml

@@ -276,6 +276,7 @@ opt-level = 0
 # Uncomment to debug local changes.
 # ratatui = { path = "../../ratatui" }
 ratatui = { git = "https://github.com/nornagon/ratatui", branch = "nornagon-v0.29.0-patch" }
+crossterm = { git = "https://github.com/nornagon/crossterm", branch = "nornagon/color-query" }
 
 # Uncomment to debug local changes.
 # rmcp = { path = "../../rust-sdk/crates/rmcp" }