Fixed random failures in SDLVoiceCommandManagerSpec due to operations being canceled

[FrankElias77]

Fixes #2001

Risk

This PR makes no API changes.

Testing Plan

• I have verified that I have not introduced new warnings in this PR (or explain why below)
• I have run the unit tests with this PR
• I have tested this PR against Core and verified behavior (if applicable, if not applicable, explain why below).

Unit Tests

N/A

Core Tests

N/A

Core version / branch / commit hash / module tested against: N/A
HMI name / version / branch / commit hash / module tested against: N/A

Summary

Canceled the current executing operation when a new operation is added

Changelog

Breaking Changes

• N/A

Enhancements

• N/A

Bug Fixes

• Canceled the current executing operation when a new operation is added

Tasks Remaining:

N/A

CLA

• I have signed the CLA

[codecov]

Codecov Report

Merging #2002 (aee01a1) into develop (b1339ea) will increase coverage by 0.54%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #2002      +/-   ##
===========================================
+ Coverage    86.09%   86.63%   +0.54%     
===========================================
  Files          441      441              
  Lines        22622    23460     +838     
===========================================
+ Hits         19476    20325     +849     
+ Misses        3146     3135      -11