Fix recursive put file logic

[BOsterbuhr]

This PR corrects an issue I introduced in #9636.

• Before [PFS-188] Improve put file UX and fix trailing slash bug #9636 when you ran pachctl put file repo@branch:/ -r -f /path/to/dir and /path/to/dir has files a.txt and b.txt you would end up with two files repo@branch:/a.txt and repo@branch:/b.txt"
• After [PFS-188] Improve put file UX and fix trailing slash bug #9636 when running pachctl put file repo@branch:/ -r -f /path/to/dir and /path/to/dir has files a.txt and b.txt you end up with two files with the dir prefix: repo@branch:/dir/a.txt and repo@branch:/dir/b.txt

Now after this PR the behavior has been corrected so the files are put at the root.

This PR also adds two tests that cover pachctl put file repo@branch:/ -r -f /path/to/dir --full-path and pachctl put file repo@branch:/ -r -f /path/to/dir

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (1b25a53) 59.37% compared to head (af59517) 59.40%.
Report is 9 commits behind head on master.

Files	Patch %	Lines
src/server/pfs/cmds/cmds.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9744      +/-   ##
==========================================
+ Coverage   59.37%   59.40%   +0.02%     
==========================================
  Files         583      583              
  Lines       71139    71139              
==========================================
+ Hits        42242    42258      +16     
+ Misses      28277    28249      -28     
- Partials      620      632      +12     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[brycemcanally]

I think this could just be

finalPath := file.Path
if recursive && fullPath || !recursive && strings.HasSuffix(file.Path, "/") {
        finalPath = joinPaths(file.Path, target)
}
if err := putFileHelper(mf, finalPath, source, recursive, appendFile, untar); err != nil {
    return err
}

[brycemcanally]

lgtm