fix(analytical): Fix WCC's wrong result

[songqing]

What do these changes do?

When run this WCC algorithm with only one worker, the algorithm will only compute one iteration, so as to cause wrong result.
Fix by add ForceContinue() in PEval() when needed.

[songqing]

@zhanglei1949 please help a review

[zhanglei1949]

LGTM

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 30.95%. Comparing base (7ec6d6c) to head (f97383b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4623      +/-   ##
==========================================
- Coverage   33.02%   30.95%   -2.07%     
==========================================
  Files         127      127              
  Lines       13299    13316      +17     
==========================================
- Hits         4392     4122     -270     
- Misses       8907     9194     +287     

see 28 files with indirect coverage changes

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