[jdk21u] RFR: 8317294: Classloading throws exceptions over already pending exceptions

[Aleksey Shipilev]

Clean backport to fix a corner case bug.

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Commit messages:
 - Backport d4c904d81970bbe5b0afe1029eae705366779839

Changes: https://git.openjdk.org/jdk21u/pull/245/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=245&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317294
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u/pull/245.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/245/head:pull/245

PR: https://git.openjdk.org/jdk21u/pull/245