8328948: GHA: Restoring sysroot from cache skips the build after JDK-8326960

Backport-of: 447436e18c754424a62af5135fb3a8973564091d

Author: shipilev

.github/workflows/build-cross-compile.yml

@@ -177,12 +177,12 @@ jobs:
           echo "Dumping config.log:" &&
           cat config.log &&
           exit 1)
-        if: steps.create-sysroot.outcome == 'success'
+        if: steps.create-sysroot.outcome == 'success' || steps.get-cached-sysroot.outputs.cache-hit == 'true'
 
       - name: 'Build'
         id: build
         uses: ./.github/actions/do-build
         with:
           make-target: 'hotspot ${{ inputs.make-arguments }}'
           platform: linux-${{ matrix.target-cpu }}
-        if: steps.create-sysroot.outcome == 'success'
+        if: steps.create-sysroot.outcome == 'success' || steps.get-cached-sysroot.outputs.cache-hit == 'true'