RFR: 8343791: Socket.connect API should document whether the socket will be closed when hostname resolution fails or another error occurs [v19]

[Volkan Yazıcı]

> This PR, addressing 8343791, changes `Socket::connect()` methods to close the `Socket` in the event that the connection cannot be established, the timeout expires before the connection is established, or the socket address is unresolved.
> 
> `tier3` tests pass against the 9f00f61d3b7fa42a5e23a04f80bb4bb1a2076ef2.

Volkan Yazıcı has updated the pull request incrementally with two additional commits since the last revision:

 - Replace complex JUnit machinery with native Java
 - Remove tests using mocks

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22160/files
  - new: https://git.openjdk.org/jdk/pull/22160/files/aaf398f3..94543642

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22160&range=18
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22160&range=17-18

  Stats: 1112 lines in 9 files changed: 360 ins; 752 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22160.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22160/head:pull/22160

PR: https://git.openjdk.org/jdk/pull/22160