Revert "HHH-8945 increased default map size"

This reverts commit d3d2c4c5492e60c1bf3e5b5462943b4bc490027c.
Revert "HHH-8945 introduced "hibernate.session.initial_capacity" to reduce"

This reverts commit 949adc92c23e64112129c72b2e849d9c12347da4.
HHH-9001 Unnecessary Stack object being allocated in
org.hibernate.engine.internal.Cascade

Conflicts:
	hibernate-core/src/main/java/org/hibernate/engine/internal/Cascade.java
HHH-8878 Fix logged message about PooledLoOptimizer being created

Conflicts:
	hibernate-core/src/main/java/org/hibernate/id/enhanced/OptimizerFactory.java
HHH-8878 Avoid hot allocation in PooledLoOptimizer

Conflicts:
	hibernate-core/src/main/java/org/hibernate/id/enhanced/OptimizerFactory.java
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