[jdk16u] RFR: 8259662: Don't wrap SocketExceptions into SSLExceptions in SSLSocketImpl

[Christoph Langer]

8259662: Don't wrap SocketExceptions into SSLExceptions in SSLSocketImpl

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Commit messages:
 - Incorporate review comments by phh
 - Backport 63f8fc87cdf3edb828474bb4954b76721ba8f9e5

Changes: https://git.openjdk.java.net/jdk16u/pull/94/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk16u&pr=94&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8259662
  Stats: 205 lines in 7 files changed: 177 ins; 4 del; 24 mod
  Patch: https://git.openjdk.java.net/jdk16u/pull/94.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16u pull/94/head:pull/94

PR: https://git.openjdk.java.net/jdk16u/pull/94