[JDK-8343791](https://bugs.openjdk.org/browse/JDK-8343791) modified `Socket::connect` to throw `UHE` on unresolved addresses – merged in #22160. As reported in [JDK-8346017](https://bugs.openjdk.org/browse/JDK-8346017), this renders `connect()` unusable when there is a (SOCKS) proxy in play, where calling `connect()` using unresolved addresses is a valid operation. This PR
1. Reverts the earlier `Socket::connect` change 2. Updates tests accordingly 3. Enhances tests with proxied socket inputs These changes require CSR and RN tickets. I will implement them once we agree on a solution here. ------------- Commit messages: - Remove `UHE` guard from `Socket::connect` Changes: https://git.openjdk.org/jdk/pull/22719/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22719&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8346017 Stats: 103 lines in 2 files changed: 64 ins; 11 del; 28 mod Patch: https://git.openjdk.org/jdk/pull/22719.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/22719/head:pull/22719 PR: https://git.openjdk.org/jdk/pull/22719
