[jdk21u-dev] RFR: 8320049: PKCS10 would not discard the cause when throw SignatureException on invalid key

[Rui Li]

A clean backport for https://bugs.openjdk.org/browse/JDK-8320049.

This patch passes cause in SignatureException on invalid key. Pretty small and straightforward. Low risks. Tests are running.

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Commit messages:
 - Backport 2c4c6c9ba3f4682e3696ecdd9aea1905443785fa

Changes: https://git.openjdk.org/jdk21u-dev/pull/2176/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2176&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320049
  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2176.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2176/head:pull/2176

PR: https://git.openjdk.org/jdk21u-dev/pull/2176