fix(react): show exact DNS operation values (#40)

## Summary

Show the exact DNS value and optional priority for every provisioning
and cleanup operation before the user authorizes it.

## Before / After

| Review field | Before | After |
| --- | --- | --- |
| Operation | Visible | Visible |
| Record type | Visible | Visible |
| Record name | Visible | Visible |
| Record value | Hidden | Visible |
| Priority | Hidden | Visible when present |

## Screenshots

![Provisioning review with exact DNS
values](https://scratchpad.arya.sh/f/01a052b6-24c6-7c1e-aeee-378b9db6b493/domainkit-operation-values.png)

## Validation

- `bun run release:check`
- 127 core tests, 39 React tests, artifact checks, and 5 browser tests
passed