NodeDeletionTimeout and NodeDrainTimeout were added to Topology managed clusters in #7098 and #6278. Currently the values of these fields are not validated on creation, and validation is instead done when the templates are turned into objects.

This lack of up-front validation lead to the unexpected failure in #7047. We could do some basic validation in the webhook on object creation to ensure these values are correctly formatted and in a given range before creation.

/kind feature