Closes#9910 FOR REAL this time.
I had fixed the issue on Linux but not Windows. Context:
https://github.com/nushell/nushell/issues/9910#issuecomment-1689308886
I've tested this PR successfully on Windows, Linux, and macOS by running
`watch . {|a,b| print $a; print $b}` and confirming that it prints once
when I change a file in the current directory.