KEP-3926: Update testing section according to beta req

Author: ibihim

keps/sig-auth/3926-handling-undecryptable-resources/README.md

@@ -531,7 +531,7 @@ For Beta and GA, add links to added tests together with links to k8s-triage for
 https://storage.googleapis.com/k8s-triage/index.html
 -->
 
-New tests will be added to prove:
+Alpha:
 - resources that are encrypted and are decryptable can still be deleted as before
 - resources that are malformed throw the new error on read
 - resources that are malformed cannot be removed if the user lacks required
@@ -541,6 +541,15 @@ New tests will be added to prove:
 - if there are too many malformed resources in a return of a LIST action, the
   error will be truncated
 
+Beta (see also [Testing Requirements](#testing-requirements)):
+- list error aggregation
+  ([#129129](https://github.com/kubernetes/kubernetes/pull/129129) - open)
+- delete handler with unsafe deletion flow
+  ([#128726](https://github.com/kubernetes/kubernetes/pull/128726) - open)
+- deserialization failure via bit-flip (not just encryption failure)
+- deletion works for CRDs
+- KAS health recovery after deleting all corrupt objects
+
 ##### e2e tests
 
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