Remove Hibernate substitutions and deprecated properties usage

[sdeleuze]

As a follow-up of #32311, let's raise the baseline to Hibernate 6.5 (at least for native) in order to leverage https://hibernate.atlassian.net/browse/HHH-17568 and https://hibernate.atlassian.net/browse/HHH-17643 in order to remove the 2 Hibernate substitutions required to avoid Bytebuddy breaking native support with Hibernate.

[sdeleuze]

Tested successfully with Petclinic and:

• Removing Target_BytecodeProvider and Target_BytecodeProviderInitiator substitutions
• Using Hibernate 6.5.0.Final and related metadata