disable iteration 3 feature flag

Author: adamwhitingnhs

app/cypress/support/feature_flags.ts

@@ -7,5 +7,5 @@ export const defaultFeatureFlags: FeatureFlags = {
     uploadArfWorkflowEnabled: true,
     uploadLambdaEnabled: true,
     uploadDocumentIteration2Enabled: true,
-    uploadDocumentIteration3Enabled: true,
+    uploadDocumentIteration3Enabled: false,
 };