ci: explicitly install sdk-platform-java and snapshot bigquery/translate in pqc-tests workflow

Author: diegomarquezp

.github/workflows/pqc-tests.yml

@@ -40,19 +40,25 @@ jobs:
         cd google-http-java-client
         mvn clean install -DskipTests=true -Dcheckstyle.skip -Dclirr.skip -Denforcer.skip -Dfmt.skip
 
-    # 5. Build the entire monorepo core components required by the tests
-    - name: Build and Install Core Dependency Reactor
+    # 5. Build and Install sdk-platform-java core libraries first (establishes JCA dependencies in local Maven cache)
+    - name: Build and Install sdk-platform-java Core
+      run: |
+        cd google-cloud-java-pqc/sdk-platform-java
+        mvn clean install -T 1.5C -Dcheckstyle.skip -Dclirr.skip -Denforcer.skip -Dfmt.skip -DskipTests=true
+
+    # 6. Build and Install snapshot bigquery, java-translate, and pqc-test targets
+    - name: Build and Install Client Snapshot Libraries and Test Modules
       run: |
         cd google-cloud-java-pqc
-        mvn clean install -pl sdk-platform-java,java-bigquery,java-translate,sdk-platform-java/pqc-test/pqc-test-snapshot,sdk-platform-java/pqc-test/pqc-test-release -am -T 1.5C -Dcheckstyle.skip -Dclirr.skip -Denforcer.skip -Dfmt.skip -DskipTests=true
+        mvn clean install -pl java-bigquery,java-translate,sdk-platform-java/pqc-test/pqc-test-snapshot,sdk-platform-java/pqc-test/pqc-test-release -am -T 1.5C -Dcheckstyle.skip -Dclirr.skip -Denforcer.skip -Dfmt.skip -DskipTests=true
 
-    # 6. Run Snapshot PQC Tests (EXPECT PASS)
+    # 7. Run Snapshot PQC Tests (EXPECT PASS)
     - name: Run Snapshot PQC Connectivity Tests (Expect PASS)
       run: |
         cd google-cloud-java-pqc/sdk-platform-java/pqc-test/pqc-test-snapshot
         mvn install -Dcheckstyle.skip -Dclirr.skip -Denforcer.skip -Dfmt.skip -Dtest=RunPqcTest
 
-    # 7. Run Release PQC Tests (EXPECT FAIL)
+    # 8. Run Release PQC Tests (EXPECT FAIL)
     - name: Run Release PQC Connectivity Tests (Expect FAIL)
       # We expect this step to fail. If it passes, it means release libraries are negotiating PQC (which is incorrect).
       # Thus we run it and assert that the maven command fails (exit code != 0).