Fix nightly triggered exceptions

Signed-off-by: ZePan110 <ze.pan@intel.com>

Author: ZePan110

.github/workflows/_run-docker-compose.yml

@@ -91,7 +91,7 @@ jobs:
 
   compose-test:
     needs: [get-test-case]
-    if: ${{ fromJSON(needs.get-test-case.outputs.test_cases).length != 0 }}
+    if: ${{ fromJSON(needs.get-test-case.outputs.test_cases).length != 0 || needs.get-test-case.outputs.test_cases != '' }}
     strategy:
       matrix:
         test_case: ${{ fromJSON(needs.get-test-case.outputs.test_cases) }}

.github/workflows/nightly-docker-build-publish.yml

@@ -34,7 +34,7 @@ jobs:
 
   build-and-test:
     needs: get-build-matrix
-    if: ${{ fromJSON(needs.get-build-matrix.outputs.examples_json).length != 0 }}
+    if: ${{ needs.get-build-matrix.outputs.examples_json != '' }}
     strategy:
       matrix:
         example: ${{ fromJSON(needs.get-build-matrix.outputs.examples_json) }}