Add test 'MeshModifierTester' with 1D mesh

[grospelliergilles]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 70.70%. Comparing base (dd41e3a) to head (567a2c5).
Report is 3 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
arcane/src/arcane/tests/MeshModificationTester.cc	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2015      +/-   ##
==========================================
+ Coverage   70.64%   70.70%   +0.05%     
==========================================
  Files        2290     2290              
  Lines      167525   167531       +6     
  Branches    19298    19298              
==========================================
+ Hits       118345   118446     +101     
+ Misses      42091    42001      -90     
+ Partials     7089     7084       -5     

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