Fix hierarchical paths inside generate arrays

[povik]

Take some input with an unnamed generate array, e.g.

module top;
  genvar i;
  for (i = 0; i < 1; i = i + 1) begin
    logic a;
  end
endmodule

make a fix so that the hierpath of the wire is top.genblk1[0].a not
top[0].a.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.70%. Comparing base (8637e2e) to head (f43ddd5).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1031   +/-   ##
=======================================
  Coverage   94.70%   94.70%           
=======================================
  Files         191      191           
  Lines       47569    47597   +28     
=======================================
+ Hits        45048    45078   +30     
+ Misses       2521     2519    -2     

Files	Coverage Δ
source/ast/Symbol.cpp	96.10% <100.00%> (+0.10%)	⬆️

... and 5 files with indirect coverage changes

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[MikePopoloski]

Thanks for the PR. Can you add a test that covers this logic so that it doesn't break in the future?

[povik]

@MikePopoloski take a look