dist: Cover Tencent Kona JDK 25 (#1108)

- Update Tencent Kona documentation to list JDK 25 as supported
- Add Kona 25 to the e2e verification matrix (ubuntu, windows, macos)
- Extend Kona test fixture with real Kona 25.0.3 release entries
- Add unit tests covering Kona 25 selection across all platforms

Signed-off-by: John Jiang <johnsjiang@tencent.com>
Co-authored-by: Bruno Borges <brborges@microsoft.com>

.github/workflows/e2e-versions.yml

@@ -55,6 +55,15 @@ jobs:
           - distribution: microsoft
             os: macos-latest
             version: 25
+          - distribution: kona
+            os: windows-latest
+            version: 25
+          - distribution: kona
+            os: ubuntu-latest
+            version: 25
+          - distribution: kona
+            os: macos-latest
+            version: 25
           - distribution: oracle
             os: macos-15-intel
             version: 17