[examples] Use MeshMatrixMass in hyperelastic examples

[hugtalbot]

Since users often copy paste examples, let's show good scene habits: when modeling volumetric, the MeshMatrixMass should be used instead.

I guess this will trigger the regression tests (but I need to recompile regression first, so I give the CI a chance :) )

[ci-depends-on https://github.com/sofa-framework/Regression/pull/64]

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Reviewers will merge this pull-request only if

• it builds with SUCCESS for all platforms on the CI.
• it does not generate new warnings.
• it does not generate new unit test failures.
• it does not generate new scene test failures.
• it does not break API compatibility.
• it is more than 1 week old (or has fast-merge label).

[hugtalbot]

[ci-build][with-all-tests]

[hugtalbot]

[ci-build][with-all-tests]

[sofabot]

[ci-depends-on] detected during build #3.

To unlock the merge button, you must

• Merge or close [examples] Fix unnecessary use of UncoupledConstraintCorrection SofaDefrost/ModelOrderReduction#118
  For this build, ModelOrderReduction/ExternalProjectConfig.cmake.in will be edited by builders with
  GIT_REPOSITORY https://github.com/SofaDefrost/ModelOrderReduction
  GIT_TAG 19bc3066274e000ee08512b075928a8a93250ad3

[alxbilger]

Let's fix the regression reference and go

[alxbilger]

[ci-build][with-all-tests]

[sofabot]

[ci-depends-on] detected during build #4.

To unlock the merge button, you must

• Merge or close New reference because mass changed in the scene Regression#64
  For this build, Regression/ExternalProjectConfig.cmake.in will be edited by builders with
  GIT_REPOSITORY https://github.com/sofa-framework/Regression
  GIT_TAG 8bc620beae82f70efa67cc8e8116f63788cdc6aa

[alxbilger]

[ci-build][with-all-tests][force-full-build]

[sofabot]

[ci-depends-on] detected during build #5.

To unlock the merge button, you must

• Merge or close New reference because mass changed in the scene Regression#64
  For this build, Regression/ExternalProjectConfig.cmake.in will be edited by builders with
  GIT_REPOSITORY https://github.com/sofa-framework/Regression
  GIT_TAG 8bc620beae82f70efa67cc8e8116f63788cdc6aa

[sofabot]

[ci-depends-on] detected during build #6.

All dependencies are merged/closed and all ExternalProject pointers are up-to-date. Congrats! 👍

[hugtalbot]

LGTM

[sofabot]

[ci-depends-on] detected during build #7.

All dependencies are merged/closed and all ExternalProject pointers are up-to-date. Congrats! 👍

[bakpaul]

[ci-build][with-all-tests]

[sofabot]

[ci-depends-on] detected during build #8.

All dependencies are merged/closed and all ExternalProject pointers are up-to-date. Congrats! 👍

[sofabot]

[ci-depends-on] detected during build #9.

All dependencies are merged/closed and all ExternalProject pointers are up-to-date. Congrats! 👍