[ci] Fix window version to 2022

flutter engine's window build uses Window SDKs 10.0.22621.0.
`window-2025` runner in gitHub actions no longer supports the `10.0.22621.0` SDK.

I tried several actions to install `10.0.22621.0` SDK,
but encountered other errors. This issue need to more investigation.

https://github.com/flutter-tizen/flutter/actions/runs/17605572998/job/50015558432

Author: JSUYA

.github/workflows/build.yml

@@ -107,7 +107,7 @@ jobs:
           if-no-files-found: error
 
   windows-build:
-    runs-on: windows-latest
+    runs-on: windows-2022
 
     strategy:
       matrix: