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1. There is now thread local static memory for use with a conservative max number of iterations needed for contact. 2. For possible needs of high precision contact recovery with large iteration numbers (i.e. ellipsoid-ellipsoid collisions), there are callbacks to allocate memory when needed. PiperOrigin-RevId: 739187134 Change-Id: I3d210f75218922d969c78465da3fe50da4fe3080