Bump windows to latests as GH will remove windows-2019 EOM (#51798)

Summary:
As per title, GH is [removing windows-2019](https://github.com/facebook/react-native/actions/runs/15421451006/job/43403215354) at the end of the month. We need to migrate away from them.

## Changelog:
[Internal] - Bump windows runners

Pull Request resolved: https://github.com/facebook/react-native/pull/51798

Test Plan: GHA

Reviewed By: cortinico

Differential Revision: D75946994

Pulled By: cipolleschi

fbshipit-source-id: 972b60300c918c0eae0403ed4149347a4ffa8bd0

.github/workflows/nightly.yml

@@ -120,7 +120,7 @@ jobs:
           react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
 
   build_hermesc_windows:
-    runs-on: windows-2019
+    runs-on: windows-2025
     needs: prepare_hermes_workspace
     env:
       HERMES_WS_DIR: 'D:\tmp\hermes'

.github/workflows/publish-release.yml

@@ -116,7 +116,7 @@ jobs:
           react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
 
   build_hermesc_windows:
-    runs-on: windows-2019
+    runs-on: windows-2025
     needs: prepare_hermes_workspace
     env:
       HERMES_WS_DIR: 'D:\tmp\hermes'

.github/workflows/test-all.yml

@@ -424,7 +424,7 @@ jobs:
           react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
 
   build_hermesc_windows:
-    runs-on: windows-2019
+    runs-on: windows-2025
     needs: prepare_hermes_workspace
     env:
       HERMES_WS_DIR: 'D:\tmp\hermes'