HHH-8942 Micro polishing in hot method of TransactionCoordinatorImpl

Conflicts:
	hibernate-core/src/main/java/org/hibernate/engine/transaction/internal/TransactionCoordinatorImpl.java

Conflicts:
	hibernate-core/src/main/java/org/hibernate/engine/transaction/internal/TransactionCoordinatorImpl.java
HHH-8942 log level checks should not be static
Conflicts:
	hibernate-core/src/main/java/org/hibernate/engine/transaction/internal/TransactionCoordinatorImpl.java