[jdk21u-dev] RFR: 8308144: Uncontrolled memory consumption in SSLFlowDelegate.Reader

[Martin Doerr]

Clean backport of [JDK-8308144](https://bugs.openjdk.org/browse/JDK-8308144).

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Commit messages:
 - Backport 099a8f5b2f924fddd43ff72f3f7c6f34b6c15b0f

Changes: https://git.openjdk.org/jdk21u-dev/pull/571/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=571&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308144
  Stats: 662 lines in 3 files changed: 642 ins; 0 del; 20 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/571.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/571/head:pull/571

PR: https://git.openjdk.org/jdk21u-dev/pull/571