ignore genesis block on importChain

[ucwong]

No description provided.

[codecov]

Codecov Report

Merging #1686 (8d253c0) into master (e4cfdb9) will decrease coverage by 0.01%.
Report is 2 commits behind head on master.
The diff coverage is 0.00%.

❗ Current head 8d253c0 differs from pull request most recent head 2f184aa. Consider uploading reports for the commit 2f184aa to get more accurate results

@@            Coverage Diff             @@
##           master    #1686      +/-   ##
==========================================
- Coverage   52.54%   52.54%   -0.01%     
==========================================
  Files         481      481              
  Lines       60268    60270       +2     
==========================================
  Hits        31669    31669              
+ Misses      26188    26185       -3     
- Partials     2411     2416       +5     

Files Changed	Coverage Δ
ctxc/api.go	4.89% <0.00%> (-0.04%)	⬇️

... and 10 files with indirect coverage changes