[8u] TLSv1.3 RFR: 8245476: Disable TLSv1.3 protocol in the ClientHello message by default

[Alexey Bakhtin]

Hello Martin,

> 
> One question: why do we need to include TLS 1.3 when retrieving the list
> of client enabled ciphersuites to assign
> CustomizedTLSContext::clientDefaultCipherSuites field?
> 
TLS1.3 cipher suites should be enabled, otherwise we can not switch to TLSv1.3 protocol with  SSLSocket.setEnabledProtocols() or SSLSocket.setSSLParameters(). TLS1.3 cipher suites will be disabled and handshake fails because of no appropriate protocol + cipher suite.

Regards
Alexey

> Thanks,
> Martin.-
>