## What kind of change does this PR introduce?
Feature / UX update.
## What is the current behavior?
Platform webhook deliveries cannot be retried from the deliveries table
or the delivery details sheet.
## What is the new behavior?
- Adds a retry action to individual platform webhook deliveries in the
endpoint deliveries table
- Adds a retry action to the shared delivery details sheet footer
- Limits retry to non-success deliveries
- Applies the table action hit area guidance from the design system
Successful deliveries should also not expose retry in this mock flow.
## Additional context
- Addresses DEPR-340.
- In the current mock implementation, queueing updates the existing
delivery in place: it sets the status to `pending`, clears
`responseCode`, and refreshes `attemptAt` to the current timestamp.
- The mock does not create a separate queued job or append a new
delivery record yet; the same delivery is resurfaced at the top of the
list because deliveries are sorted by latest attempt time.
Danny White
aa11d60874