Follow-up from "Conditionally render policy alert editor"

The following discussions from !52036 (merged) should be addressed:

• @kerrizor started a discussion:

  Nit: I wonder if we could extract the large, repetitive common elements here into a shared_example or even a let variable? 🤔

• @kerrizor started a discussion:

  Nit: I might consider pulling this into a private method (#details even) just to clean up the readability of this method, but that's super minor.