RFR: 8367610: Test tools/sincechecker/modules/java.base/JavaBaseCheckSince.java timed out on Windows

[Nizar Benalla]

On Tue, 23 Sep 2025 14:00:24 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

> Timeout after "8260555: Change the default TIMEOUT_FACTOR from 4 to 1"
> 
> The test usually runs in 30 seconds but it seems to be struggling sometimes with the 120 second timeout.

As suggested by Chen offline, I will add some additional improvements to the test in this PR.

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PR Comment: https://git.openjdk.org/jdk/pull/27453#issuecomment-3324207508