RDKB-65401: Code coverage changes for aker notification

[guruchandru]

Reason for change: Code coverage
Test Procedure: build should be successful

Risks: Medium
Priority: P1

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.43%. Comparing base (e911db6) to head (a8553da).

Files with missing lines	Patch %	Lines
src/aker_notification.c	71.42%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #191      +/-   ##
==========================================
- Coverage   56.01%   55.43%   -0.59%     
==========================================
  Files          17       17              
  Lines        2351     2134     -217     
  Branches      528      408     -120     
==========================================
- Hits         1317     1183     -134     
+ Misses        878      619     -259     
- Partials      156      332     +176     

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