[jdk21u-dev] RFR: 8321053: Use ByteArrayInputStream.buf directly when parameter of transferTo() is trusted

[Daniel Hu]

Clean backport. Fixes bug with ByteArrayInputStream.transferTo(OutputStream) passing ByteArrayInputStream.buf to OutputStream parameters not in package java.io. Change passes added `test/jdk/java/io/ByteArrayInputStream/TransferToTrusted.java` on linux x64.

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Commit messages:
 - Backport b0d145097cdc61e4bab19393a125e63aa3bc29b9

Changes: https://git.openjdk.org/jdk21u-dev/pull/1669/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1669&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8321053
  Stats: 108 lines in 2 files changed: 107 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1669.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1669/head:pull/1669

PR: https://git.openjdk.org/jdk21u-dev/pull/1669