Renaming feature toggle to remove . character (#20247)

Author: cosu419

config/features.yml

@@ -707,10 +707,10 @@ features:
     actor_type: cookie_id
     description: Enables Appoint a Representative frontend
     enable_in_development: true
-  appoint_a_representative_enable_2.0_features:
+  appoint_a_representative_enable_v2_features:
     actor_type: user
     description: Enables Appoint a Representative 2.0 features for frontend and backend
-    enable_in_development: true  
+    enable_in_development: true
   appoint_a_representative_enable_pdf:
     actor_type: user
     description: Enables Appoint a Representative PDF generation endpoint