Added a step to validate rest api spec location before release (#38332)

* Added a step to validate rest api spec location before release

* Correct the artifactLocation parameter value

* Update archetype-java-release.yml

Added comment for the step.

(cherry picked from commit d1dd313)

eng/pipelines/templates/stages/archetype-java-release.yml

@@ -118,6 +118,12 @@ stages:
                     PackageName: ${{artifact.name}}
                     ServiceName: ${{parameters.ServiceDirectory}}
                     ForRelease: true
+              # Verify both TypeSpec and swagger specification are from the main branch of Azure/azure-rest-api-specs repo.
+              - template: /eng/common/pipelines/templates/steps/verify-restapi-spec-location.yml
+                parameters:
+                  PackageName: ${{artifact.name}}
+                  ServiceDirectory: ${{parameters.ServiceDirectory}}
+                  ArtifactLocation: $(Pipeline.Workspace)/${{parameters.ArtifactName}}-signed/${{artifact.groupId}}
 
               # Only check compilation if this isn't an uber JAR release.
               # Uber JARs are self-contained and a compilation failure during creating it would have prevented its creation.