Re-enable post-2.0 migration internal rules

Author: luanpotter

detekt.yaml

@@ -1,11 +1,9 @@
 complexity:
   active: true
-  # TODO: these were turned off during the upgrade to 2.0.0-alpha.2. Revisit to see what make sense.
   ReplaceSafeCallChainWithRun:
-    active: false
+    active: true
   CognitiveComplexMethod:
-    active: false
-  # End of TODO
+    active: true
   ComplexCondition:
     active: true
     allowedConditions: 9