Catch exception during finalize phase

[ray6080]

• Add try/catch for finalizeIfNecessary.
• Remove waitAllTasksToCompleteOrError and waitUntilEnoughTasksFinish.

[codecov]

Codecov Report

Patch coverage: 80.00% and project coverage change: +0.05 🎉

Comparison is base (5931a4a) 91.19% compared to head (d31cba0) 91.24%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1835      +/-   ##
==========================================
+ Coverage   91.19%   91.24%   +0.05%     
==========================================
  Files         779      780       +1     
  Lines       28650    28588      -62     
==========================================
- Hits        26126    26086      -40     
+ Misses       2524     2502      -22     

Impacted Files	Coverage Δ
src/include/common/task_system/task_scheduler.h	100.00% <ø> (ø)
src/common/task_system/task.cpp	90.90% <50.00%> (-9.10%)	⬇️
src/common/task_system/task_scheduler.cpp	98.27% <100.00%> (+28.86%)	⬆️
src/include/common/task_system/task.h	96.15% <100.00%> (ø)

... and 17 files with indirect coverage changes

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