ci/windows: Always include windows-msvc in scheduled pipelines

The windows-msvc job currently runs only when Windows-related
files are modified.
To always run it in scheduled runs, we need to inherit
.scheduled_pipeline-rules.

Fixes: 435017700d ("ci/windows: Add a manual full job")

Signed-off-by: Valentine Burley <valentine.burley@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32717>

src/microsoft/ci/gitlab-ci-inc.yml

@@ -17,6 +17,7 @@
 # rules duplication manually
 .windows-build-rules:
   rules:
+    - !reference [.scheduled_pipeline-rules, rules]
     - !reference [.test, rules]
     - !reference [.microsoft-farm-rules, rules]
     - !reference [.zink-common-rules, rules]