cmd: remove nil context check on test command

[KaloyanTanev]

Context nil check is not necessary, as cobra is always checking on their end if the context is nil and if so, assigning background context to it.

category: refactor
ticket: none

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.78%. Comparing base (ddb95fd) to head (0b17625).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3086      +/-   ##
==========================================
+ Coverage   56.73%   56.78%   +0.05%     
==========================================
  Files         208      208              
  Lines       29113    29104       -9     
==========================================
+ Hits        16516    16528      +12     
+ Misses      10751    10737      -14     
+ Partials     1846     1839       -7     

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