TrkDetDescrGeoModelCnv: Another file to optimize in the debug build.

Compile GMTreeBrower with optimization, even in the debug build. Otherwise, the Eigen operations are very slow. This speeds to the TrkVertexSeedFinderTools unit tests by over a factor of two.

This merge request affects 1 package:

• Tracking/TrkDetDescr/TrkDetDescrGeoModelCnv

This merge request affects 2 files:

• Tracking/TrkDetDescr/TrkDetDescrGeoModelCnv/CMakeLists.txt
• Tracking/TrkDetDescr/TrkDetDescrGeoModelCnv/src/GMTreeBrowser.cxx

added Tracking main review-pending-level-1 labels

CI Result SUCCESS (hash d3ffe37a)

	Athena
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 10524] (remote access info)

OK - Joany (L1)

removed review-pending-level-1 label

added review-approved label

mentioned in commit 5cec0cf4

merged