ci: Re-enable this for all handwritten libraries

Author: lqiu96

.github/workflows/downstream_protobuf_compatibility_check_nightly.yaml

@@ -25,26 +25,28 @@ jobs:
       fail-fast: false
       matrix:
         repo:
-#          - google-cloud-java
+          - google-cloud-java
           - java-bigtable
-#          - java-bigquery
-#          - java-bigquerystorage
-#          - java-datastore
-#          - java-firestore
-#          - java-logging
-#          - java-logging-logback
-#          - java-pubsub
-#          - java-pubsublite
-#          - java-spanner-jdbc
-#          - java-spanner
-#          - java-storage
-#          - java-storage-nio
+          - java-bigquery
+          - java-bigquerystorage
+          - java-datastore
+          - java-firestore
+          - java-logging
+          - java-logging-logback
+          - java-pubsub
+          - java-pubsublite
+          - java-spanner-jdbc
+          - java-spanner
+          - java-storage
+          - java-storage-nio
         # Default Protobuf-Java versions to use are specified here. Without this, the nightly workflow won't know
         # which values to use and would resolve to ''.
         protobuf-version: ${{ fromJSON(format('[{0}]', inputs.protobuf_runtime_versions || '"3.25.5","4.28.3"')) }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/checkout@v4
+      - name: Checkout sdk-platform-java repo
+        uses: actions/checkout@v4
+      - name: Checkout downstream handwritten repo
+        uses: actions/checkout@v4
         with:
           repository: "googleapis/${{ matrix.repo }}"
           path: "${{ matrix.repo }}"
@@ -53,13 +55,11 @@ jobs:
           # Use Java 11 for this as Linkage Checker is only compatible with Java 11 or below
           java-version: 11
           distribution: temurin
-      - run: |
-          pwd
+      - name: Install downstream repo locally
+        run: |
           pushd "${{ matrix.repo }}"
           mvn -B -ntp install -T 1C -DskipTests -Dclirr.skip -Denforcer.skip
-          pwd
           popd
-          pwd
       - name: Print Protobuf-Java testing version
         run: echo "Testing with Protobuf-Java v${{ matrix.protobuf-version }}"
       - name: Perform downstream source compatibility testing