cli: fix output hash endianness in 'util canceltx'

[AnnaShaleva]

Close #3365. A replacement of #4274.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.50%. Comparing base (a827b71) to head (a9b2ef9).
⚠️ Report is 10 commits behind head on master.

Files with missing lines	Patch %	Lines
cli/util/cancel.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4277      +/-   ##
==========================================
+ Coverage   83.49%   83.50%   +0.01%     
==========================================
  Files         359      359              
  Lines       44158    44168      +10     
==========================================
+ Hits        36871    36884      +13     
+ Misses       5471     5468       -3     
  Partials     1816     1816              

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