Fixed invalid gRPC TaskProgress message on compile

[cmaglie]

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What kind of change does this PR introduce?

Fixes invalid gRPC TaskProgress message sent on compile, particularly a spurious message with a percentage of completion >100% and a duplicate boolean field completed set to true.

What is the current behavior?

The following message sequence is observed in compile:

[...]
COMPILE PROGRESS> percent:62.96297
COMPILE PROGRESS> percent:66.66667
COMPILE PROGRESS> percent:70.37038
COMPILE PROGRESS> percent:74.07408
COMPILE PROGRESS> percent:77.77779
COMPILE PROGRESS> percent:81.48149
COMPILE PROGRESS> percent:85.185196
COMPILE PROGRESS> percent:88.8889
COMPILE PROGRESS> percent:92.592606
COMPILE PROGRESS> percent:96.29631
COMPILE PROGRESS> completed:true percent:100.000015
COMPILE PROGRESS> completed:true percent:103.70372

There is a last spurious message due to incorrect progress tracking.

What is the new behavior?

[...]
COMPILE PROGRESS> percent:76
COMPILE PROGRESS> percent:80
COMPILE PROGRESS> percent:84
COMPILE PROGRESS> percent:88
COMPILE PROGRESS> percent:92
COMPILE PROGRESS> percent:96
COMPILE PROGRESS> completed:true  percent:100

Does this PR introduce a breaking change, and is titled accordingly?

No

Other information

Fixes #2711

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.67%. Comparing base (ea09108) to head (5b63bfa).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2731      +/-   ##
==========================================
- Coverage   67.68%   67.67%   -0.01%     
==========================================
  Files         234      234              
  Lines       22285    22295      +10     
==========================================
+ Hits        15083    15089       +6     
- Misses       6017     6020       +3     
- Partials     1185     1186       +1     

Flag	Coverage Δ
unit	67.67% <100.00%> (-0.01%)	⬇️

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[alessio-perugini]

sweet