[jdk25u-dev] RFR: 8373086: Make isexceeded001.java more robust

[SendaoYan]

Hi all,

This pull request contains a backport of commit [4d696d0d](https://github.com/openjdk/jdk/commit/4d696d0d0ed523e3c99c68214586673913b1c7b5) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Albert Mingkun Yang on 5 Dec 2025 and was reviewed by Joel Sikström and Thomas Schatzl.

Thanks!

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Commit messages:
 - Backport 4d696d0d0ed523e3c99c68214586673913b1c7b5

Changes: https://git.openjdk.org/jdk25u-dev/pull/69/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=69&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373086
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/69.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/69/head:pull/69

PR: https://git.openjdk.org/jdk25u-dev/pull/69