dashboard, syz-ci: add blacklist for bisection results

[xairy]

Currently only ignores the commit that adds the Raw Gadget interface.

Requested here:
https://groups.google.com/g/syzkaller-bugs/c/sZUeGC3Fh-o/m/t_5cKPrMAQAJ

[codecov]

Codecov Report

Merging #1782 into master will decrease coverage by 0.0%.
The diff coverage is 28.6%.

@@           Coverage Diff            @@
##           master   #1782     +/-   ##
========================================
- Coverage    65.6%   65.6%   -0.0%     
========================================
  Files         150     150             
  Lines       28091   28097      +6     
========================================
+ Hits        18425   18426      +1     
- Misses       8458    8463      +5     
  Partials     1208    1208             

Flag	Coverage Δ
#dashboard	67.5% <100.0%> (+<0.1%)	⬆️
#unittests	56.8% <0.0%> (-<0.1%)	⬇️

Impacted Files	Coverage Δ
syz-ci/jobs.go	6.7% <0.0%> (-0.1%)	⬇️
dashboard/app/entities.go	75.9% <100.0%> (+0.2%)	⬆️
pkg/report/linux.go	84.2% <0.0%> (ø)

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