[jdk21u-dev] RFR: 8368982: Test sun/security/tools/jarsigner/EC.java completed and timed out [v2]

[SendaoYan]

> Hi all,
> 
> This pull request contains a backport of commit [b0721e28](https://github.com/openjdk/jdk/commit/b0721e28591f2ee19fd5cb6581747df0b1efed48) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Mikhail Yankelevich on 23 Oct 2025 and was reviewed by Rajan Halade.
> 
> Change has been verified locally on linux-x64. Test-fix only, no risk.
> 
> Thanks!

SendaoYan has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'openjdk:master' into backport-sendaoYan-b0721e28-master
 - Backport b0721e28591f2ee19fd5cb6581747df0b1efed48

-------------

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/2387/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/2387/files/a8957dab..cdb88588

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2387&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2387&range=00-01

  Stats: 37867 lines in 2468 files changed: 15372 ins; 7850 del; 14645 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2387.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2387/head:pull/2387

PR: https://git.openjdk.org/jdk21u-dev/pull/2387