RFR: 8366364: Address inconsistencies in SSLParameters object returned by SSLConfiguration#getSSLParameters() call [v3]

[Artur Barashev]

> We need to address the following inconsistencies in SSLConfiguration#getSSLParameters() call:
> - For the signatureSchemes we return only what's been set by the user, the default values are not being returned like for other SSLParameters.
> - namedGroups return value is not being filtered against algorithm constraints, unlike other SSLParameters.

Artur Barashev has updated the pull request incrementally with one additional commit since the last revision:

  Log unavailable configured signature scheme

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Changes:
  - all: https://git.openjdk.org/jdk/pull/27961/files
  - new: https://git.openjdk.org/jdk/pull/27961/files/ecc95437..f8721c93

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27961&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27961&range=01-02

  Stats: 9 lines in 1 file changed: 8 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27961.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27961/head:pull/27961

PR: https://git.openjdk.org/jdk/pull/27961