tests: skip unstable test temporarily

[lhy1024]

What problem does this PR solve?

Issue Number: Ref #4399

What is changed and how does it work?

Check List

Tests

• Unit test

Release note

None.

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[codecov]

Codecov Report

Merging #7215 (6540933) into master (4176c1d) will decrease coverage by 0.76%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7215      +/-   ##
==========================================
- Coverage   74.59%   73.83%   -0.76%     
==========================================
  Files         442      442              
  Lines       47744    47744              
==========================================
- Hits        35614    35254     -360     
- Misses       8987     9435     +448     
+ Partials     3143     3055      -88     

Flag	Coverage Δ
unittests	73.83% <ø> (-0.76%)	⬇️

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