(v2) foreground/background color requests don't work in tmux

[robinovitch61]

Describe the bug Not sure if this is a real bug or not, i.e. not sure if you want to make a workaround/fix for it, but would be awesome if this could be supported.

Setup Please complete the following information along with version numbers, if applicable.

• OS [e.g. Ubuntu, macOS] MacOS
• Shell [e.g. zsh, fish] zsh
• Terminal Emulator [e.g. kitty, iterm] iterm2
• Terminal Multiplexer [e.g. tmux] tmux

To Reproduce In tmux, this produces no output:

echo -e "\x1b]10;?\x07"

So in my bubble tea app, I never get back a foreground/background color message.

Source Code N/A

Expected behavior Get foreground/background color message in tmux.

Screenshots None

Additional context Add any other context about the problem here.