Revert "HHH-8945 increased default map size"

This reverts commit 8e5e8d1b14d4cb08c12289f78690bf39dbdf287b.
Revert "HHH-8945 introduced "hibernate.session.initial_capacity" to reduce"

This reverts commit 09ea1b33f92ff6eae5b911d32b6ce9e4af781f20.
HHH-9001 Unnecessary Stack object being allocated in org.hibernate.engine.internal.Cascade
HHH-8878 Fix logged message about PooledLoOptimizer being created
HHH-8878 Avoid hot allocation in PooledLoOptimizer
HHH-8878 Remove some dead code
HHH-8878 corrected id conflict in CoreMessageLogger
HHH-8950 Avoid repeated array allocation for sqlTypes
HHH-9003 Avoid allocating arrays in most methods of ComponentType