Fix #199, Add test for missing branch in SAMPLE_APP_Process()

[thnkslprpt]

Checklist

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License Agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution

• Fixes Missing test for one branch in SAMPLE_APP_Process() #199
  • Tests added to cover missing branch.
    • The test calls SAMPLE_APP_Process() with a seeded failure from CFE_TBL_ReleaseAddress().
    • The desired branch flow is confirmed by checking for the expected 3 additional calls to CFE_ES_WriteToSysLog() (in this function, only this specific path would add 3 additional calls to CFE_ES_WriteToSysLog()).

Testing performed
GitHub CI actions all passing successfully.
Tested locally confirming extra branch covered now, increasing branch coverage slightly (from 37/41 to 38/41 branches) and line cover to 100%.

Prior:

With these changes:

Expected behavior changes
Tests now cover an additional branch.

System(s) tested on
Intel(R) Celeron(R) N4100 CPU @ 1.10GHz x86_64
Debian GNU/Linux 11 (bullseye)
Current main branch of cFS.

Contributor Info
Avi Weiss @thnkslprpt