RFR: 8327378: XMLStreamReader throws EOFException instead of XMLStreamException

[Joe Wang]

Fix an error handling where the XMLStreamReader impl throws EOFException instead of XMLStreamException as defined.

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Commit messages:
 - 8327378: XMLStreamReader throws EOFException instead of XMLStreamException

Changes: https://git.openjdk.org/jdk/pull/23524/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23524&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327378
  Stats: 68 lines in 3 files changed: 62 ins; 1 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/23524.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23524/head:pull/23524

PR: https://git.openjdk.org/jdk/pull/23524