RFR: 8340387: Update OS detection code to recognize Windows Server 2025

[mjschwaiger]

On Thu, 19 Sep 2024 07:40:43 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> Windows Server 2025 will be releases in a few months.
> The OS detection code of the JVM/JDK should recognize the new Windows server 2025 version.
> (currently Windows server 2022 is printed , that is wrong)
> 
> The build numbers of some recent previews documented here
> https://learn.microsoft.com/en-us/windows-server/get-started/whats-new-windows-server-2025
> are 26080 and 26085 (final release version will most likely be a bit higher).

src/hotspot/os/windows/os_windows.cpp line 1950:

> 1948:       // - 2019 GA 11/2018 build: 17763
> 1949:       // - 2022 GA 08/2021 build: 20348
> 1950:       // - 2025 Preview build   : 26040

Just for the record, Microsoft released Windows Server 2025 on Nov 1st, 2025 and the official build number is 26100.

// - 2025 GA 11/2024 build: 26100
if (build_number > 26099) {
  st->print("Server 2025");

Reference: https://learn.microsoft.com/en-us/windows-server/get-started/windows-server-release-info

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PR Review Comment: https://git.openjdk.org/jdk/pull/21082#discussion_r1830880925