RFR: 8345726: Update mx in RunTestPrebuiltSpec to reflect change in JDK-8345302

Mon Dec 9 13:57:42 UTC 2024

On Fri, 6 Dec 2024 20:49:49 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> In [JDK-8345302](https://bugs.openjdk.org/browse/JDK-8345302) I updated the default JAVA_FLAGS_BIG to -Xmx2048M in configure. In RunTestPrebuiltSpec.gmk, there is a copy of this value that also needs to be updated as it should mimic a typical configuration.

Marked as reviewed by ihse (Reviewer).

Thanks for fixing!

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PR Review: https://git.openjdk.org/jdk/pull/22615#pullrequestreview-2488870098
PR Comment: https://git.openjdk.org/jdk/pull/22615#issuecomment-2528023136