iTerm supports OSC 9;4

[case]

Similar to #2724

it would be really nice if there was an universally established protocol to query supported emulator features, too late for that

Yup. :/

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 80.96%. Comparing base (141824b) to head (2b567bb).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
nextest-runner/src/reporter/displayer/progress.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2927      +/-   ##
==========================================
- Coverage   80.96%   80.96%   -0.01%     
==========================================
  Files         124      124              
  Lines       30160    30160              
==========================================
- Hits        24420    24419       -1     
- Misses       5740     5741       +1     

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[sunshowers]

Thanks. You may want to send the same fix over to Cargo: https://github.com/rust-lang/cargo/blob/6451eb8ea679514fd45c28a0dff1a53142f6e0a9/src/cargo/core/shell.rs#L638-L645