Fixing the gradle invocation in the npmOfficePack script to use the offline dependencies

.ado/npmOfficePack.js

@@ -27,7 +27,9 @@ function doPublish(fakeMode) {
   const onlyTagSource = !!branchVersionSuffix;
   if (!onlyTagSource) {
     // -------- Generating Android Artifacts with JavaDoc
-    exec(path.join(process.env.BUILD_SOURCESDIRECTORY, "gradlew") + " installArchives");
+    const depsEnvPrefix = "REACT_NATIVE_DEPENDENCIES=" + path.join(process.env.BUILD_SOURCESDIRECTORY, "build_deps");
+    const gradleCommand = path.join(process.env.BUILD_SOURCESDIRECTORY, "gradlew") + " installArchives";
+    exec( depsEnvPrefix + " " + gradleCommand );
 
     // undo uncommenting javadoc setting
     exec("git checkout ReactAndroid/gradle.properties");