pantsd not invalidating cache when file permission changes

[chris-smith-zocdoc]

Describe the bug

pantsd doesn’t seem to catch a permission change as an invalidation but the local disk cache is unaffected I think.
I hit this in a custom plugin rule locally, but an equivalent reproduction is below

Pants version
2.19.0

OS
Only verified on MacOS so far

Additional info

shell_sources(name="files")

run_shell_command(
    name="test",
    command="ls -lah {chroot}/*",
    execution_dependencies=[":files"],
)

touch foo.sh

pants run :test
outputs -rw-r--r--

chmod +x foo.sh
pants run :test 
outputs -rw-r--r-- !!!!

if you kill pantsd, or use --no-pantsd then you’ll see the correct permissions -rwxr-xr-x

https://pantsbuild.slack.com/archives/C046T6T9U/p1715225535806319