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Describe the bug / provide steps to reproduce it

When using the mouse wheel / trackpad to scroll up and down in the terminal in a tmux session with mouse mode enabled, scroll speed is way too fast, compared to a terminal emulator like WezTerm.

Environment

Zed: v0.156.0 (Zed Preview)
OS: macOS 15.0.1
Memory: 8 GiB
Architecture: aarch64

If applicable, add mockups / screenshots to help explain present your vision of the feature

Compare and contrast — same tmux session, from WezTerm (reasonable scroll speed) then Zed (way too fast):

If applicable, attach your Zed.log file to this issue.