Fix high CPU usage

[squell]

NOTE: #843 should be merged before this one (and then this one rebased on the new main) to fix the clippy issues.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 15 lines in your changes missing coverage. Please review.

Project coverage is 57.96%. Comparing base (865a7d3) to head (bdbf05c).
Report is 16 commits behind head on main.

❗ Current head bdbf05c differs from pull request most recent head 4e6e916

Please upload reports for the commit 4e6e916 to get more accurate results.

Files	Patch %	Lines
src/exec/use_pty/pipe/mod.rs	0.00%	15 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #845      +/-   ##
==========================================
+ Coverage   57.48%   57.96%   +0.47%     
==========================================
  Files          75       75              
  Lines       10421    10140     -281     
==========================================
- Hits         5991     5878     -113     
+ Misses       4430     4262     -168     

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[squell]

@pvdrz Your changes look good to me (if they pass the test suite)! (I can't formally review this PR since I opened it.)

Also again thanks for @AppleSheeple for debugging this issue and proposing the original fix.

[pvdrz]

Doing a formal approve