Correctly report CodeQL version when using cache (#1259)

* Correctly report CodeQL version when using cache

* Add JS generated files

* Add test for return value of `setupCodeQL`

* Fill in missing return value comment

src/codeql.ts

@@ -421,7 +421,7 @@ async function getCodeQLBundleDownloadURL(
  * @param logger
  * @param checkVersion Whether to check that CodeQL CLI meets the minimum
  *        version requirement. Must be set to true outside tests.
- * @returns
+ * @returns a { CodeQL, toolsVersion } object.
  */
 export async function setupCodeQL(
   codeqlURL: string | undefined,
@@ -479,6 +479,7 @@ export async function setupCodeQL(
               `CodeQL in cache overriding the default ${CODEQL_BUNDLE_VERSION}`
             );
             codeqlFolder = tmpCodeqlFolder;
+            codeqlURLVersion = codeqlVersions[0];
           }
         }
       }