fix: check for app.Name if is empty, and pick the args[0] if so #20474

[monegim]

The appname is specified in the command create, so when the metadata.name is empty, the name could be used from the command line.

Fixes #20474

[bunnyshell]

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 21 lines in your changes missing coverage. Please review.

Project coverage is 55.04%. Comparing base (ec499bb) to head (8ebd966).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
cmd/util/common.go	0.00%	13 Missing ⚠️
cmd/util/app.go	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #20475      +/-   ##
==========================================
- Coverage   55.07%   55.04%   -0.04%     
==========================================
  Files         322      323       +1     
  Lines       54927    54948      +21     
==========================================
- Hits        30253    30244       -9     
- Misses      22068    22109      +41     
+ Partials     2606     2595      -11     

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