Ignore MG_OLDPARBDY tag in MMG5_coltet and MMG5_coltetlag

[coprigent]

Since pull request #241, tag MG_OLDPARBDY may be given to edges during a split. It is then necessary to ignore it to ensure the validity of if statements using integer comparaison in MMG5_coltet and MMG5_coltetlag.

[codecov]

Codecov Report

Attention: Patch coverage is 68.75000% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 50.48%. Comparing base (9e391f3) to head (5d45866).
Report is 1 commits behind head on develop.

Files	Patch %	Lines
src/mmg3d/mmg3d1.c	69.23%	1 Missing and 3 partials ⚠️
src/mmg3d/mmg3d3.c	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #272   +/-   ##
========================================
  Coverage    50.47%   50.48%           
========================================
  Files          174      174           
  Lines        47158    47167    +9     
  Branches     10259    10255    -4     
========================================
+ Hits         23802    23811    +9     
  Misses       15633    15633           
  Partials      7723     7723           

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[Algiane]

Thanks