[CI] Fix intermittent actions/cache errors (#4220)

Author: webfiltered

.github/workflows/test-ui.yaml

@@ -46,8 +46,8 @@ jobs:
         id: cache-key
         run: echo "key=$(date +%s)" >> $GITHUB_OUTPUT
 
-      - name: Cache setup
-        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684
+      - name: Save cache
+        uses: actions/cache/save@5a3ec84eff668545956fd18022155c47e93e2684
         with:
           path: |
             ComfyUI
@@ -62,9 +62,13 @@ jobs:
       matrix:
         browser: [chromium, chromium-2x, mobile-chrome]
     steps:
+      - name: Wait for cache propagation
+        run: sleep 10
+
       - name: Restore cached setup
-        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684
+        uses: actions/cache/restore@5a3ec84eff668545956fd18022155c47e93e2684
         with:
+          fail-on-cache-miss: true
           path: |
             ComfyUI
             ComfyUI_frontend