additional debug logging on smb copy/rename failures

[icewind1991]

Signed-off-by: Robin Appelman robin@icewind.nl

[codecov]

Codecov Report

Merging #7555 into master will decrease coverage by 0.02%.
The diff coverage is 33.33%.

@@             Coverage Diff              @@
##             master    #7555      +/-   ##
============================================
- Coverage     51.17%   51.14%   -0.03%     
- Complexity    24869    24875       +6     
============================================
  Files          1601     1601              
  Lines         94692    94736      +44     
  Branches       1368     1368              
============================================
- Hits          48454    48450       -4     
- Misses        46238    46286      +48

Impacted Files	Coverage Δ	Complexity Δ
apps/files_external/lib/Lib/Storage/SMB.php	5.63% <0%> (-0.03%)	116 <0> (ø)
lib/private/Files/Storage/Common.php	69.2% <50%> (-0.11%)	147 <0> (+1)
...private/Collaboration/Collaborators/MailPlugin.php	38.84% <0%> (-19.91%)	24% <0%> (+5%)
core/js/js.js	62.98% <0%> (-0.57%)	0% <0%> (ø)