admin/delete_crate: Improve logging output

[Turbo87]

This makes it easier to see at a glance which crate a log message belongs to. tracing fields are useful too, but in this case it makes more sense to have the name directly in the log message.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.

Project coverage is 89.09%. Comparing base (6d1789d) to head (f2d76da).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/admin/delete_crate.rs	0.00%	11 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9519   +/-   ##
=======================================
  Coverage   89.09%   89.09%           
=======================================
  Files         286      286           
  Lines       28878    28878           
=======================================
+ Hits        25728    25729    +1     
+ Misses       3150     3149    -1     

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