Document use of redundant feature flag API call

src/analyze-action.ts

@@ -111,6 +111,10 @@ async function run() {
       repositoryNwo,
       logger
     );
+    // We currently perform an API request in both the `init` and `analyze` Actions to determine
+    // what feature flags are enabled. At the time of writing, this redundant API call is acceptable
+    // to us, but if we wanted to avoid it, we could do so by serializing the feature flags as part
+    // of the config file.
     void featureFlags.preloadFeatureFlags();
 
     await runFinalize(outputDir, threads, memory, config, logger);