fix(Nightly-build): checkout ref expression (#1629)

* fix(nightly-build.yml): checkout ref expression

Author: UnschooledGamer

.github/workflows/nightly-build.yml

@@ -98,7 +98,7 @@
           with:
             fetch-depth: 0 # Required for tags
             persist-credentials: false
-            ref: (inputs.is_PR && inputs.PR_NUMBER) && github.event.pull_request.head.sha || ''
+            ref: ${{ (inputs.is_PR && inputs.PR_NUMBER) && github.event.pull_request.head.sha || '' }}
 
         - name: Set up Java 21
           uses: actions/setup-java@v4