Disable build_test_all_windows job while it is failing. (#11351)

See https://github.com/iree-org/iree/issues/11350

.github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 528aefe..bb7c8f2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -152,9 +152,10 @@
           gcloud alpha storage cp "${BUILD_DIR_ARCHIVE}" "${BUILD_DIR_GCS_ARTIFACT}"
           echo "::set-output name=build-dir-gcs-artifact::${BUILD_DIR_GCS_ARTIFACT}"
 
+  # TODO(#11350): re-enable this job when it works again
   build_test_all_windows:
     needs: setup
-    if: needs.setup.outputs.should-run == 'true' && needs.setup.outputs.ci-stage == 'postsubmit'
+    if: false && needs.setup.outputs.should-run == 'true' && needs.setup.outputs.ci-stage == 'postsubmit'
     runs-on: managed-windows-cpu
     defaults:
       run: