RFR: 8361950: Update to use jtreg 8

[Hao Sun]

On Wed, 30 Jul 2025 16:26:55 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

> Hello Hao,
> 
> > Hi, I encountered two jtreg failures with this new version `8` on both AArch64 and x86_64 platforms.
> > Note that these two jtreg cases can pass with jtreg `7.5.2+1` version.
> 
> Thank you for bringing this up. I'm able to reproduce this issue with this newer version of jtreg. I'll take a look to see what's going on.

Thanks for your confirm, Jaikiran.
Forgot to mention that I tested `jdk_all, hotspot_all, langtools_all` with jtreg `8` and only found these two test failures.

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PR Comment: https://git.openjdk.org/jdk/pull/26261#issuecomment-3141675024