fix: create function return success if create failed on tablet

[dl239]

close #3440

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (f6dc23e) 75.79% compared to head (e3a1734) 75.79%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #3441   +/-   ##
=========================================
  Coverage     75.79%   75.79%           
  Complexity      414      414           
=========================================
  Files           703      703           
  Lines        127658   127661    +3     
  Branches       1206     1206           
=========================================
+ Hits          96759    96763    +4     
+ Misses        30658    30657    -1     
  Partials        241      241           

Files Changed	Coverage Δ
src/cmd/single_tablet_test.cc	99.31% <100.00%> (+0.01%)	⬆️
src/nameserver/name_server_impl.cc	44.92% <100.00%> (+0.02%)	⬆️

... and 16 files with indirect coverage changes

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